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Sync with FreeBSD - add OpenBSD 4.2.
[dragonfly.git] / contrib / hostapd-0.5.8 / config.c
blobd1b2ba3fa5e0a815dfe567cb4cddfc0983d5c64f
1 /*
2 * hostapd / Configuration file
3 * Copyright (c) 2003-2006, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15 #include "includes.h"
16 #ifndef CONFIG_NATIVE_WINDOWS
17 #include <grp.h>
18 #endif /* CONFIG_NATIVE_WINDOWS */
19
20 #include "hostapd.h"
21 #include "driver.h"
22 #include "sha1.h"
23 #include "eap.h"
24 #include "radius_client.h"
25 #include "wpa_common.h"
26
27
28 #define MAX_STA_COUNT 2007
29
30
31 static int hostapd_config_read_vlan_file(struct hostapd_bss_config *bss,
32 const char *fname)
33 {
34 FILE *f;
35 char buf[128], *pos, *pos2;
36 int line = 0, vlan_id;
37 struct hostapd_vlan *vlan;
38
39 f = fopen(fname, "r");
40 if (!f) {
41 printf("VLAN file '%s' not readable.\n", fname);
42 return -1;
43 }
44
45 while (fgets(buf, sizeof(buf), f)) {
46 line++;
47
48 if (buf[0] == '#')
49 continue;
50 pos = buf;
51 while (*pos != '\0') {
52 if (*pos == '\n') {
53 *pos = '\0';
54 break;
55 }
56 pos++;
57 }
58 if (buf[0] == '\0')
59 continue;
60
61 if (buf[0] == '*') {
62 vlan_id = VLAN_ID_WILDCARD;
63 pos = buf + 1;
64 } else {
65 vlan_id = strtol(buf, &pos, 10);
66 if (buf == pos || vlan_id < 1 ||
67 vlan_id > MAX_VLAN_ID) {
68 printf("Invalid VLAN ID at line %d in '%s'\n",
69 line, fname);
70 fclose(f);
71 return -1;
72 }
73 }
74
75 while (*pos == ' ' || *pos == '\t')
76 pos++;
77 pos2 = pos;
78 while (*pos2 != ' ' && *pos2 != '\t' && *pos2 != '\0')
79 pos2++;
80 *pos2 = '\0';
81 if (*pos == '\0' || strlen(pos) > IFNAMSIZ) {
82 printf("Invalid VLAN ifname at line %d in '%s'\n",
83 line, fname);
84 fclose(f);
85 return -1;
86 }
87
88 vlan = malloc(sizeof(*vlan));
89 if (vlan == NULL) {
90 printf("Out of memory while reading VLAN interfaces "
91 "from '%s'\n", fname);
92 fclose(f);
93 return -1;
94 }
95
96 memset(vlan, 0, sizeof(*vlan));
97 vlan->vlan_id = vlan_id;
98 strncpy(vlan->ifname, pos, sizeof(vlan->ifname));
99 if (bss->vlan_tail)
100 bss->vlan_tail->next = vlan;
101 else
102 bss->vlan = vlan;
103 bss->vlan_tail = vlan;
104 }
105
106 fclose(f);
107
108 return 0;
109 }
110
111
112 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
113 {
114 struct hostapd_vlan *vlan, *prev;
115
116 vlan = bss->vlan;
117 prev = NULL;
118 while (vlan) {
119 prev = vlan;
120 vlan = vlan->next;
121 free(prev);
122 }
123
124 bss->vlan = NULL;
125 }
126
127
128 /* convert floats with one decimal place to value*10 int, i.e.,
129 * "1.5" will return 15 */
130 static int hostapd_config_read_int10(const char *value)
131 {
132 int i, d;
133 char *pos;
134
135 i = atoi(value);
136 pos = strchr(value, '.');
137 d = 0;
138 if (pos) {
139 pos++;
140 if (*pos >= '0' && *pos <= '9')
141 d = *pos - '0';
142 }
143
144 return i * 10 + d;
145 }
146
147
148 static void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
149 {
150 bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
151 bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
152 bss->logger_syslog = (unsigned int) -1;
153 bss->logger_stdout = (unsigned int) -1;
154
155 bss->auth_algs = HOSTAPD_AUTH_OPEN | HOSTAPD_AUTH_SHARED_KEY;
156
157 bss->wep_rekeying_period = 300;
158 /* use key0 in individual key and key1 in broadcast key */
159 bss->broadcast_key_idx_min = 1;
160 bss->broadcast_key_idx_max = 2;
161 bss->eap_reauth_period = 3600;
162
163 bss->wpa_group_rekey = 600;
164 bss->wpa_gmk_rekey = 86400;
165 bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
166 bss->wpa_pairwise = WPA_CIPHER_TKIP;
167 bss->wpa_group = WPA_CIPHER_TKIP;
168
169 bss->max_num_sta = MAX_STA_COUNT;
170
171 bss->dtim_period = 2;
172
173 bss->radius_server_auth_port = 1812;
174 bss->ap_max_inactivity = AP_MAX_INACTIVITY;
175 bss->eapol_version = EAPOL_VERSION;
176 }
177
178
179 static struct hostapd_config * hostapd_config_defaults(void)
180 {
181 struct hostapd_config *conf;
182 struct hostapd_bss_config *bss;
183 int i;
184 const int aCWmin = 15, aCWmax = 1024;
185 const struct hostapd_wme_ac_params ac_bk =
186 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
187 const struct hostapd_wme_ac_params ac_be =
188 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
189 const struct hostapd_wme_ac_params ac_vi = /* video traffic */
190 { aCWmin >> 1, aCWmin, 2, 3000 / 32, 1 };
191 const struct hostapd_wme_ac_params ac_vo = /* voice traffic */
192 { aCWmin >> 2, aCWmin >> 1, 2, 1500 / 32, 1 };
193
194 conf = wpa_zalloc(sizeof(*conf));
195 bss = wpa_zalloc(sizeof(*bss));
196 if (conf == NULL || bss == NULL) {
197 printf("Failed to allocate memory for configuration data.\n");
198 free(conf);
199 free(bss);
200 return NULL;
201 }
202
203 /* set default driver based on configuration */
204 conf->driver = driver_lookup("default");
205 if (conf->driver == NULL) {
206 printf("No default driver registered!\n");
207 free(conf);
208 free(bss);
209 return NULL;
210 }
211
212 bss->radius = wpa_zalloc(sizeof(*bss->radius));
213 if (bss->radius == NULL) {
214 free(conf);
215 free(bss);
216 return NULL;
217 }
218
219 hostapd_config_defaults_bss(bss);
220
221 conf->num_bss = 1;
222 conf->bss = bss;
223
224 conf->beacon_int = 100;
225 conf->rts_threshold = -1; /* use driver default: 2347 */
226 conf->fragm_threshold = -1; /* user driver default: 2346 */
227 conf->send_probe_response = 1;
228 conf->bridge_packets = INTERNAL_BRIDGE_DO_NOT_CONTROL;
229
230 memcpy(conf->country, "US ", 3);
231
232 for (i = 0; i < NUM_TX_QUEUES; i++)
233 conf->tx_queue[i].aifs = -1; /* use hw default */
234
235 conf->wme_ac_params[0] = ac_be;
236 conf->wme_ac_params[1] = ac_bk;
237 conf->wme_ac_params[2] = ac_vi;
238 conf->wme_ac_params[3] = ac_vo;
239
240 return conf;
241 }
242
243
244 static int hostapd_parse_ip_addr(const char *txt, struct hostapd_ip_addr *addr)
245 {
246 if (inet_aton(txt, &addr->u.v4)) {
247 addr->af = AF_INET;
248 return 0;
249 }
250
251 #ifdef CONFIG_IPV6
252 if (inet_pton(AF_INET6, txt, &addr->u.v6) > 0) {
253 addr->af = AF_INET6;
254 return 0;
255 }
256 #endif /* CONFIG_IPV6 */
257
258 return -1;
259 }
260
261
262 int hostapd_mac_comp(const void *a, const void *b)
263 {
264 return memcmp(a, b, sizeof(macaddr));
265 }
266
267
268 int hostapd_mac_comp_empty(const void *a)
269 {
270 macaddr empty = { 0 };
271 return memcmp(a, empty, sizeof(macaddr));
272 }
273
274
275 static int hostapd_config_read_maclist(const char *fname, macaddr **acl,
276 int *num)
277 {
278 FILE *f;
279 char buf[128], *pos;
280 int line = 0;
281 u8 addr[ETH_ALEN];
282 macaddr *newacl;
283
284 if (!fname)
285 return 0;
286
287 f = fopen(fname, "r");
288 if (!f) {
289 printf("MAC list file '%s' not found.\n", fname);
290 return -1;
291 }
292
293 while (fgets(buf, sizeof(buf), f)) {
294 line++;
295
296 if (buf[0] == '#')
297 continue;
298 pos = buf;
299 while (*pos != '\0') {
300 if (*pos == '\n') {
301 *pos = '\0';
302 break;
303 }
304 pos++;
305 }
306 if (buf[0] == '\0')
307 continue;
308
309 if (hwaddr_aton(buf, addr)) {
310 printf("Invalid MAC address '%s' at line %d in '%s'\n",
311 buf, line, fname);
312 fclose(f);
313 return -1;
314 }
315
316 newacl = (macaddr *) realloc(*acl, (*num + 1) * ETH_ALEN);
317 if (newacl == NULL) {
318 printf("MAC list reallocation failed\n");
319 fclose(f);
320 return -1;
321 }
322
323 *acl = newacl;
324 memcpy((*acl)[*num], addr, ETH_ALEN);
325 (*num)++;
326 }
327
328 fclose(f);
329
330 qsort(*acl, *num, sizeof(macaddr), hostapd_mac_comp);
331
332 return 0;
333 }
334
335
336 static int hostapd_config_read_wpa_psk(const char *fname,
337 struct hostapd_ssid *ssid)
338 {
339 FILE *f;
340 char buf[128], *pos;
341 int line = 0, ret = 0, len, ok;
342 u8 addr[ETH_ALEN];
343 struct hostapd_wpa_psk *psk;
344
345 if (!fname)
346 return 0;
347
348 f = fopen(fname, "r");
349 if (!f) {
350 printf("WPA PSK file '%s' not found.\n", fname);
351 return -1;
352 }
353
354 while (fgets(buf, sizeof(buf), f)) {
355 line++;
356
357 if (buf[0] == '#')
358 continue;
359 pos = buf;
360 while (*pos != '\0') {
361 if (*pos == '\n') {
362 *pos = '\0';
363 break;
364 }
365 pos++;
366 }
367 if (buf[0] == '\0')
368 continue;
369
370 if (hwaddr_aton(buf, addr)) {
371 printf("Invalid MAC address '%s' on line %d in '%s'\n",
372 buf, line, fname);
373 ret = -1;
374 break;
375 }
376
377 psk = wpa_zalloc(sizeof(*psk));
378 if (psk == NULL) {
379 printf("WPA PSK allocation failed\n");
380 ret = -1;
381 break;
382 }
383 if (memcmp(addr, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0)
384 psk->group = 1;
385 else
386 memcpy(psk->addr, addr, ETH_ALEN);
387
388 pos = buf + 17;
389 if (pos == '\0') {
390 printf("No PSK on line %d in '%s'\n", line, fname);
391 free(psk);
392 ret = -1;
393 break;
394 }
395 pos++;
396
397 ok = 0;
398 len = strlen(pos);
399 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
400 ok = 1;
401 else if (len >= 8 && len < 64) {
402 pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
403 4096, psk->psk, PMK_LEN);
404 ok = 1;
405 }
406 if (!ok) {
407 printf("Invalid PSK '%s' on line %d in '%s'\n",
408 pos, line, fname);
409 free(psk);
410 ret = -1;
411 break;
412 }
413
414 psk->next = ssid->wpa_psk;
415 ssid->wpa_psk = psk;
416 }
417
418 fclose(f);
419
420 return ret;
421 }
422
423
424 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
425 {
426 struct hostapd_ssid *ssid = &conf->ssid;
427
428 if (ssid->wpa_passphrase != NULL) {
429 if (ssid->wpa_psk != NULL) {
430 printf("Warning: both WPA PSK and passphrase set. "
431 "Using passphrase.\n");
432 free(ssid->wpa_psk);
433 }
434 ssid->wpa_psk = wpa_zalloc(sizeof(struct hostapd_wpa_psk));
435 if (ssid->wpa_psk == NULL) {
436 printf("Unable to alloc space for PSK\n");
437 return -1;
438 }
439 wpa_hexdump_ascii(MSG_DEBUG, "SSID",
440 (u8 *) ssid->ssid, ssid->ssid_len);
441 wpa_hexdump_ascii(MSG_DEBUG, "PSK (ASCII passphrase)",
442 (u8 *) ssid->wpa_passphrase,
443 strlen(ssid->wpa_passphrase));
444 pbkdf2_sha1(ssid->wpa_passphrase,
445 ssid->ssid, ssid->ssid_len,
446 4096, ssid->wpa_psk->psk, PMK_LEN);
447 wpa_hexdump(MSG_DEBUG, "PSK (from passphrase)",
448 ssid->wpa_psk->psk, PMK_LEN);
449 ssid->wpa_psk->group = 1;
450
451 memset(ssid->wpa_passphrase, 0,
452 strlen(ssid->wpa_passphrase));
453 free(ssid->wpa_passphrase);
454 ssid->wpa_passphrase = NULL;
455 }
456
457 if (ssid->wpa_psk_file) {
458 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
459 &conf->ssid))
460 return -1;
461 free(ssid->wpa_psk_file);
462 ssid->wpa_psk_file = NULL;
463 }
464
465 return 0;
466 }
467
468
469 #ifdef EAP_SERVER
470 static int hostapd_config_read_eap_user(const char *fname,
471 struct hostapd_bss_config *conf)
472 {
473 FILE *f;
474 char buf[512], *pos, *start, *pos2;
475 int line = 0, ret = 0, num_methods;
476 struct hostapd_eap_user *user, *tail = NULL;
477
478 if (!fname)
479 return 0;
480
481 f = fopen(fname, "r");
482 if (!f) {
483 printf("EAP user file '%s' not found.\n", fname);
484 return -1;
485 }
486
487 /* Lines: "user" METHOD,METHOD2 "password" (password optional) */
488 while (fgets(buf, sizeof(buf), f)) {
489 line++;
490
491 if (buf[0] == '#')
492 continue;
493 pos = buf;
494 while (*pos != '\0') {
495 if (*pos == '\n') {
496 *pos = '\0';
497 break;
498 }
499 pos++;
500 }
501 if (buf[0] == '\0')
502 continue;
503
504 user = NULL;
505
506 if (buf[0] != '"' && buf[0] != '*') {
507 printf("Invalid EAP identity (no \" in start) on "
508 "line %d in '%s'\n", line, fname);
509 goto failed;
510 }
511
512 user = wpa_zalloc(sizeof(*user));
513 if (user == NULL) {
514 printf("EAP user allocation failed\n");
515 goto failed;
516 }
517 user->force_version = -1;
518
519 if (buf[0] == '*') {
520 pos = buf;
521 } else {
522 pos = buf + 1;
523 start = pos;
524 while (*pos != '"' && *pos != '\0')
525 pos++;
526 if (*pos == '\0') {
527 printf("Invalid EAP identity (no \" in end) on"
528 " line %d in '%s'\n", line, fname);
529 goto failed;
530 }
531
532 user->identity = malloc(pos - start);
533 if (user->identity == NULL) {
534 printf("Failed to allocate memory for EAP "
535 "identity\n");
536 goto failed;
537 }
538 memcpy(user->identity, start, pos - start);
539 user->identity_len = pos - start;
540
541 if (pos[0] == '"' && pos[1] == '*') {
542 user->wildcard_prefix = 1;
543 pos++;
544 }
545 }
546 pos++;
547 while (*pos == ' ' || *pos == '\t')
548 pos++;
549
550 if (*pos == '\0') {
551 printf("No EAP method on line %d in '%s'\n",
552 line, fname);
553 goto failed;
554 }
555
556 start = pos;
557 while (*pos != ' ' && *pos != '\t' && *pos != '\0')
558 pos++;
559 if (*pos == '\0') {
560 pos = NULL;
561 } else {
562 *pos = '\0';
563 pos++;
564 }
565 num_methods = 0;
566 while (*start) {
567 char *pos3 = strchr(start, ',');
568 if (pos3) {
569 *pos3++ = '\0';
570 }
571 user->methods[num_methods].method =
572 eap_get_type(start, &user->methods[num_methods]
573 .vendor);
574 if (user->methods[num_methods].vendor ==
575 EAP_VENDOR_IETF &&
576 user->methods[num_methods].method == EAP_TYPE_NONE)
577 {
578 printf("Unsupported EAP type '%s' on line %d "
579 "in '%s'\n", start, line, fname);
580 goto failed;
581 }
582
583 num_methods++;
584 if (num_methods >= EAP_USER_MAX_METHODS)
585 break;
586 if (pos3 == NULL)
587 break;
588 start = pos3;
589 }
590 if (num_methods == 0) {
591 printf("No EAP types configured on line %d in '%s'\n",
592 line, fname);
593 goto failed;
594 }
595
596 if (pos == NULL)
597 goto done;
598
599 while (*pos == ' ' || *pos == '\t')
600 pos++;
601 if (*pos == '\0')
602 goto done;
603
604 if (strncmp(pos, "[ver=0]", 7) == 0) {
605 user->force_version = 0;
606 goto done;
607 }
608
609 if (strncmp(pos, "[ver=1]", 7) == 0) {
610 user->force_version = 1;
611 goto done;
612 }
613
614 if (strncmp(pos, "[2]", 3) == 0) {
615 user->phase2 = 1;
616 goto done;
617 }
618
619 if (*pos == '"') {
620 pos++;
621 start = pos;
622 while (*pos != '"' && *pos != '\0')
623 pos++;
624 if (*pos == '\0') {
625 printf("Invalid EAP password (no \" in end) "
626 "on line %d in '%s'\n", line, fname);
627 goto failed;
628 }
629
630 user->password = malloc(pos - start);
631 if (user->password == NULL) {
632 printf("Failed to allocate memory for EAP "
633 "password\n");
634 goto failed;
635 }
636 memcpy(user->password, start, pos - start);
637 user->password_len = pos - start;
638
639 pos++;
640 } else if (strncmp(pos, "hash:", 5) == 0) {
641 pos += 5;
642 pos2 = pos;
643 while (*pos2 != '\0' && *pos2 != ' ' &&
644 *pos2 != '\t' && *pos2 != '#')
645 pos2++;
646 if (pos2 - pos != 32) {
647 printf("Invalid password hash on line %d in "
648 "'%s'\n", line, fname);
649 goto failed;
650 }
651 user->password = malloc(16);
652 if (user->password == NULL) {
653 printf("Failed to allocate memory for EAP "
654 "password hash\n");
655 goto failed;
656 }
657 if (hexstr2bin(pos, user->password, 16) < 0) {
658 printf("Invalid hash password on line %d in "
659 "'%s'\n", line, fname);
660 goto failed;
661 }
662 user->password_len = 16;
663 user->password_hash = 1;
664 pos = pos2;
665 } else {
666 pos2 = pos;
667 while (*pos2 != '\0' && *pos2 != ' ' &&
668 *pos2 != '\t' && *pos2 != '#')
669 pos2++;
670 if ((pos2 - pos) & 1) {
671 printf("Invalid hex password on line %d in "
672 "'%s'\n", line, fname);
673 goto failed;
674 }
675 user->password = malloc((pos2 - pos) / 2);
676 if (user->password == NULL) {
677 printf("Failed to allocate memory for EAP "
678 "password\n");
679 goto failed;
680 }
681 if (hexstr2bin(pos, user->password,
682 (pos2 - pos) / 2) < 0) {
683 printf("Invalid hex password on line %d in "
684 "'%s'\n", line, fname);
685 goto failed;
686 }
687 user->password_len = (pos2 - pos) / 2;
688 pos = pos2;
689 }
690
691 while (*pos == ' ' || *pos == '\t')
692 pos++;
693 if (strncmp(pos, "[2]", 3) == 0) {
694 user->phase2 = 1;
695 }
696
697 done:
698 if (tail == NULL) {
699 tail = conf->eap_user = user;
700 } else {
701 tail->next = user;
702 tail = user;
703 }
704 continue;
705
706 failed:
707 if (user) {
708 free(user->password);
709 free(user->identity);
710 free(user);
711 }
712 ret = -1;
713 break;
714 }
715
716 fclose(f);
717
718 return ret;
719 }
720 #endif /* EAP_SERVER */
721
722
723 static int
724 hostapd_config_read_radius_addr(struct hostapd_radius_server **server,
725 int *num_server, const char *val, int def_port,
726 struct hostapd_radius_server **curr_serv)
727 {
728 struct hostapd_radius_server *nserv;
729 int ret;
730 static int server_index = 1;
731
732 nserv = realloc(*server, (*num_server + 1) * sizeof(*nserv));
733 if (nserv == NULL)
734 return -1;
735
736 *server = nserv;
737 nserv = &nserv[*num_server];
738 (*num_server)++;
739 (*curr_serv) = nserv;
740
741 memset(nserv, 0, sizeof(*nserv));
742 nserv->port = def_port;
743 ret = hostapd_parse_ip_addr(val, &nserv->addr);
744 nserv->index = server_index++;
745
746 return ret;
747 }
748
749
750 static int hostapd_config_parse_key_mgmt(int line, const char *value)
751 {
752 int val = 0, last;
753 char *start, *end, *buf;
754
755 buf = strdup(value);
756 if (buf == NULL)
757 return -1;
758 start = buf;
759
760 while (start != '\0') {
761 while (*start == ' ' || *start == '\t')
762 start++;
763 if (*start == '\0')
764 break;
765 end = start;
766 while (*end != ' ' && *end != '\t' && *end != '\0')
767 end++;
768 last = *end == '\0';
769 *end = '\0';
770 if (strcmp(start, "WPA-PSK") == 0)
771 val |= WPA_KEY_MGMT_PSK;
772 else if (strcmp(start, "WPA-EAP") == 0)
773 val |= WPA_KEY_MGMT_IEEE8021X;
774 else {
775 printf("Line %d: invalid key_mgmt '%s'\n",
776 line, start);
777 free(buf);
778 return -1;
779 }
780
781 if (last)
782 break;
783 start = end + 1;
784 }
785
786 free(buf);
787 if (val == 0) {
788 printf("Line %d: no key_mgmt values configured.\n", line);
789 return -1;
790 }
791
792 return val;
793 }
794
795
796 static int hostapd_config_parse_cipher(int line, const char *value)
797 {
798 int val = 0, last;
799 char *start, *end, *buf;
800
801 buf = strdup(value);
802 if (buf == NULL)
803 return -1;
804 start = buf;
805
806 while (start != '\0') {
807 while (*start == ' ' || *start == '\t')
808 start++;
809 if (*start == '\0')
810 break;
811 end = start;
812 while (*end != ' ' && *end != '\t' && *end != '\0')
813 end++;
814 last = *end == '\0';
815 *end = '\0';
816 if (strcmp(start, "CCMP") == 0)
817 val |= WPA_CIPHER_CCMP;
818 else if (strcmp(start, "TKIP") == 0)
819 val |= WPA_CIPHER_TKIP;
820 else if (strcmp(start, "WEP104") == 0)
821 val |= WPA_CIPHER_WEP104;
822 else if (strcmp(start, "WEP40") == 0)
823 val |= WPA_CIPHER_WEP40;
824 else if (strcmp(start, "NONE") == 0)
825 val |= WPA_CIPHER_NONE;
826 else {
827 printf("Line %d: invalid cipher '%s'.", line, start);
828 free(buf);
829 return -1;
830 }
831
832 if (last)
833 break;
834 start = end + 1;
835 }
836 free(buf);
837
838 if (val == 0) {
839 printf("Line %d: no cipher values configured.", line);
840 return -1;
841 }
842 return val;
843 }
844
845
846 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
847 struct hostapd_config *conf)
848 {
849 if (bss->ieee802_1x && !bss->eap_server &&
850 !bss->radius->auth_servers) {
851 printf("Invalid IEEE 802.1X configuration (no EAP "
852 "authenticator configured).\n");
853 return -1;
854 }
855
856 if (bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
857 bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
858 bss->ssid.wpa_psk_file == NULL) {
859 printf("WPA-PSK enabled, but PSK or passphrase is not "
860 "configured.\n");
861 return -1;
862 }
863
864 if (hostapd_mac_comp_empty(bss->bssid) != 0) {
865 size_t i;
866
867 for (i = 0; i < conf->num_bss; i++) {
868 if ((&conf->bss[i] != bss) &&
869 (hostapd_mac_comp(conf->bss[i].bssid,
870 bss->bssid) == 0)) {
871 printf("Duplicate BSSID " MACSTR
872 " on interface '%s' and '%s'.\n",
873 MAC2STR(bss->bssid),
874 conf->bss[i].iface, bss->iface);
875 return -1;
876 }
877 }
878 }
879
880 return 0;
881 }
882
883
884 static int hostapd_config_check(struct hostapd_config *conf)
885 {
886 size_t i;
887
888 for (i = 0; i < conf->num_bss; i++) {
889 if (hostapd_config_check_bss(&conf->bss[i], conf))
890 return -1;
891 }
892
893 return 0;
894 }
895
896
897 static int hostapd_config_read_wep(struct hostapd_wep_keys *wep, int keyidx,
898 char *val)
899 {
900 size_t len = strlen(val);
901
902 if (keyidx < 0 || keyidx > 3 || wep->key[keyidx] != NULL)
903 return -1;
904
905 if (val[0] == '"') {
906 if (len < 2 || val[len - 1] != '"')
907 return -1;
908 len -= 2;
909 wep->key[keyidx] = malloc(len);
910 if (wep->key[keyidx] == NULL)
911 return -1;
912 memcpy(wep->key[keyidx], val + 1, len);
913 wep->len[keyidx] = len;
914 } else {
915 if (len & 1)
916 return -1;
917 len /= 2;
918 wep->key[keyidx] = malloc(len);
919 if (wep->key[keyidx] == NULL)
920 return -1;
921 wep->len[keyidx] = len;
922 if (hexstr2bin(val, wep->key[keyidx], len) < 0)
923 return -1;
924 }
925
926 wep->keys_set++;
927
928 return 0;
929 }
930
931
932 static int hostapd_parse_rates(int **rate_list, char *val)
933 {
934 int *list;
935 int count;
936 char *pos, *end;
937
938 free(*rate_list);
939 *rate_list = NULL;
940
941 pos = val;
942 count = 0;
943 while (*pos != '\0') {
944 if (*pos == ' ')
945 count++;
946 pos++;
947 }
948
949 list = malloc(sizeof(int) * (count + 2));
950 if (list == NULL)
951 return -1;
952 pos = val;
953 count = 0;
954 while (*pos != '\0') {
955 end = strchr(pos, ' ');
956 if (end)
957 *end = '\0';
958
959 list[count++] = atoi(pos);
960 if (!end)
961 break;
962 pos = end + 1;
963 }
964 list[count] = -1;
965
966 *rate_list = list;
967 return 0;
968 }
969
970
971 static int hostapd_config_bss(struct hostapd_config *conf, const char *ifname)
972 {
973 struct hostapd_bss_config *bss;
974
975 if (*ifname == '\0')
976 return -1;
977
978 bss = realloc(conf->bss, (conf->num_bss + 1) *
979 sizeof(struct hostapd_bss_config));
980 if (bss == NULL) {
981 printf("Failed to allocate memory for multi-BSS entry\n");
982 return -1;
983 }
984 conf->bss = bss;
985
986 bss = &(conf->bss[conf->num_bss]);
987 memset(bss, 0, sizeof(*bss));
988 bss->radius = wpa_zalloc(sizeof(*bss->radius));
989 if (bss->radius == NULL) {
990 printf("Failed to allocate memory for multi-BSS RADIUS "
991 "data\n");
992 return -1;
993 }
994
995 conf->num_bss++;
996 conf->last_bss = bss;
997
998 hostapd_config_defaults_bss(bss);
999 snprintf(bss->iface, sizeof(bss->iface), "%s", ifname);
1000 memcpy(bss->ssid.vlan, bss->iface, IFNAMSIZ + 1);
1001
1002 return 0;
1003 }
1004
1005
1006 static int valid_cw(int cw)
1007 {
1008 return (cw == 1 || cw == 3 || cw == 7 || cw == 15 || cw == 31 ||
1009 cw == 63 || cw == 127 || cw == 255 || cw == 511 || cw == 1023);
1010 }
1011
1012
1013 enum {
1014 IEEE80211_TX_QUEUE_DATA0 = 0, /* used for EDCA AC_VO data */
1015 IEEE80211_TX_QUEUE_DATA1 = 1, /* used for EDCA AC_VI data */
1016 IEEE80211_TX_QUEUE_DATA2 = 2, /* used for EDCA AC_BE data */
1017 IEEE80211_TX_QUEUE_DATA3 = 3, /* used for EDCA AC_BK data */
1018 IEEE80211_TX_QUEUE_DATA4 = 4,
1019 IEEE80211_TX_QUEUE_AFTER_BEACON = 6,
1020 IEEE80211_TX_QUEUE_BEACON = 7
1021 };
1022
1023 static int hostapd_config_tx_queue(struct hostapd_config *conf, char *name,
1024 char *val)
1025 {
1026 int num;
1027 char *pos;
1028 struct hostapd_tx_queue_params *queue;
1029
1030 /* skip 'tx_queue_' prefix */
1031 pos = name + 9;
1032 if (strncmp(pos, "data", 4) == 0 &&
1033 pos[4] >= '0' && pos[4] <= '9' && pos[5] == '_') {
1034 num = pos[4] - '0';
1035 pos += 6;
1036 } else if (strncmp(pos, "after_beacon_", 13) == 0) {
1037 num = IEEE80211_TX_QUEUE_AFTER_BEACON;
1038 pos += 13;
1039 } else if (strncmp(pos, "beacon_", 7) == 0) {
1040 num = IEEE80211_TX_QUEUE_BEACON;
1041 pos += 7;
1042 } else {
1043 printf("Unknown tx_queue name '%s'\n", pos);
1044 return -1;
1045 }
1046
1047 queue = &conf->tx_queue[num];
1048
1049 if (strcmp(pos, "aifs") == 0) {
1050 queue->aifs = atoi(val);
1051 if (queue->aifs < 0 || queue->aifs > 255) {
1052 printf("Invalid AIFS value %d\n", queue->aifs);
1053 return -1;
1054 }
1055 } else if (strcmp(pos, "cwmin") == 0) {
1056 queue->cwmin = atoi(val);
1057 if (!valid_cw(queue->cwmin)) {
1058 printf("Invalid cwMin value %d\n", queue->cwmin);
1059 return -1;
1060 }
1061 } else if (strcmp(pos, "cwmax") == 0) {
1062 queue->cwmax = atoi(val);
1063 if (!valid_cw(queue->cwmax)) {
1064 printf("Invalid cwMax value %d\n", queue->cwmax);
1065 return -1;
1066 }
1067 } else if (strcmp(pos, "burst") == 0) {
1068 queue->burst = hostapd_config_read_int10(val);
1069 } else {
1070 printf("Unknown tx_queue field '%s'\n", pos);
1071 return -1;
1072 }
1073
1074 queue->configured = 1;
1075
1076 return 0;
1077 }
1078
1079
1080 static int hostapd_config_wme_ac(struct hostapd_config *conf, char *name,
1081 char *val)
1082 {
1083 int num, v;
1084 char *pos;
1085 struct hostapd_wme_ac_params *ac;
1086
1087 /* skip 'wme_ac_' prefix */
1088 pos = name + 7;
1089 if (strncmp(pos, "be_", 3) == 0) {
1090 num = 0;
1091 pos += 3;
1092 } else if (strncmp(pos, "bk_", 3) == 0) {
1093 num = 1;
1094 pos += 3;
1095 } else if (strncmp(pos, "vi_", 3) == 0) {
1096 num = 2;
1097 pos += 3;
1098 } else if (strncmp(pos, "vo_", 3) == 0) {
1099 num = 3;
1100 pos += 3;
1101 } else {
1102 printf("Unknown wme name '%s'\n", pos);
1103 return -1;
1104 }
1105
1106 ac = &conf->wme_ac_params[num];
1107
1108 if (strcmp(pos, "aifs") == 0) {
1109 v = atoi(val);
1110 if (v < 1 || v > 255) {
1111 printf("Invalid AIFS value %d\n", v);
1112 return -1;
1113 }
1114 ac->aifs = v;
1115 } else if (strcmp(pos, "cwmin") == 0) {
1116 v = atoi(val);
1117 if (v < 0 || v > 12) {
1118 printf("Invalid cwMin value %d\n", v);
1119 return -1;
1120 }
1121 ac->cwmin = v;
1122 } else if (strcmp(pos, "cwmax") == 0) {
1123 v = atoi(val);
1124 if (v < 0 || v > 12) {
1125 printf("Invalid cwMax value %d\n", v);
1126 return -1;
1127 }
1128 ac->cwmax = v;
1129 } else if (strcmp(pos, "txop_limit") == 0) {
1130 v = atoi(val);
1131 if (v < 0 || v > 0xffff) {
1132 printf("Invalid txop value %d\n", v);
1133 return -1;
1134 }
1135 ac->txopLimit = v;
1136 } else if (strcmp(pos, "acm") == 0) {
1137 v = atoi(val);
1138 if (v < 0 || v > 1) {
1139 printf("Invalid acm value %d\n", v);
1140 return -1;
1141 }
1142 ac->admission_control_mandatory = v;
1143 } else {
1144 printf("Unknown wme_ac_ field '%s'\n", pos);
1145 return -1;
1146 }
1147
1148 return 0;
1149 }
1150
1151
1152 struct hostapd_config * hostapd_config_read(const char *fname)
1153 {
1154 struct hostapd_config *conf;
1155 struct hostapd_bss_config *bss;
1156 FILE *f;
1157 char buf[256], *pos;
1158 int line = 0;
1159 int errors = 0;
1160 size_t i;
1161
1162 f = fopen(fname, "r");
1163 if (f == NULL) {
1164 printf("Could not open configuration file '%s' for reading.\n",
1165 fname);
1166 return NULL;
1167 }
1168
1169 conf = hostapd_config_defaults();
1170 if (conf == NULL) {
1171 fclose(f);
1172 return NULL;
1173 }
1174 bss = conf->last_bss = conf->bss;
1175
1176 while (fgets(buf, sizeof(buf), f)) {
1177 bss = conf->last_bss;
1178 line++;
1179
1180 if (buf[0] == '#')
1181 continue;
1182 pos = buf;
1183 while (*pos != '\0') {
1184 if (*pos == '\n') {
1185 *pos = '\0';
1186 break;
1187 }
1188 pos++;
1189 }
1190 if (buf[0] == '\0')
1191 continue;
1192
1193 pos = strchr(buf, '=');
1194 if (pos == NULL) {
1195 printf("Line %d: invalid line '%s'\n", line, buf);
1196 errors++;
1197 continue;
1198 }
1199 *pos = '\0';
1200 pos++;
1201
1202 if (strcmp(buf, "interface") == 0) {
1203 snprintf(conf->bss[0].iface,
1204 sizeof(conf->bss[0].iface), "%s", pos);
1205 } else if (strcmp(buf, "bridge") == 0) {
1206 snprintf(bss->bridge, sizeof(bss->bridge), "%s", pos);
1207 } else if (strcmp(buf, "driver") == 0) {
1208 conf->driver = driver_lookup(pos);
1209 if (conf->driver == NULL) {
1210 printf("Line %d: invalid/unknown driver "
1211 "'%s'\n", line, pos);
1212 errors++;
1213 }
1214 } else if (strcmp(buf, "debug") == 0) {
1215 bss->debug = atoi(pos);
1216 } else if (strcmp(buf, "logger_syslog_level") == 0) {
1217 bss->logger_syslog_level = atoi(pos);
1218 } else if (strcmp(buf, "logger_stdout_level") == 0) {
1219 bss->logger_stdout_level = atoi(pos);
1220 } else if (strcmp(buf, "logger_syslog") == 0) {
1221 bss->logger_syslog = atoi(pos);
1222 } else if (strcmp(buf, "logger_stdout") == 0) {
1223 bss->logger_stdout = atoi(pos);
1224 } else if (strcmp(buf, "dump_file") == 0) {
1225 bss->dump_log_name = strdup(pos);
1226 } else if (strcmp(buf, "ssid") == 0) {
1227 bss->ssid.ssid_len = strlen(pos);
1228 if (bss->ssid.ssid_len > HOSTAPD_MAX_SSID_LEN ||
1229 bss->ssid.ssid_len < 1) {
1230 printf("Line %d: invalid SSID '%s'\n", line,
1231 pos);
1232 errors++;
1233 } else {
1234 memcpy(bss->ssid.ssid, pos,
1235 bss->ssid.ssid_len);
1236 bss->ssid.ssid[bss->ssid.ssid_len] = '\0';
1237 bss->ssid.ssid_set = 1;
1238 }
1239 } else if (strcmp(buf, "macaddr_acl") == 0) {
1240 bss->macaddr_acl = atoi(pos);
1241 if (bss->macaddr_acl != ACCEPT_UNLESS_DENIED &&
1242 bss->macaddr_acl != DENY_UNLESS_ACCEPTED &&
1243 bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
1244 printf("Line %d: unknown macaddr_acl %d\n",
1245 line, bss->macaddr_acl);
1246 }
1247 } else if (strcmp(buf, "accept_mac_file") == 0) {
1248 if (hostapd_config_read_maclist(pos, &bss->accept_mac,
1249 &bss->num_accept_mac))
1250 {
1251 printf("Line %d: Failed to read "
1252 "accept_mac_file '%s'\n",
1253 line, pos);
1254 errors++;
1255 }
1256 } else if (strcmp(buf, "deny_mac_file") == 0) {
1257 if (hostapd_config_read_maclist(pos, &bss->deny_mac,
1258 &bss->num_deny_mac))
1259 {
1260 printf("Line %d: Failed to read "
1261 "deny_mac_file '%s'\n",
1262 line, pos);
1263 errors++;
1264 }
1265 } else if (strcmp(buf, "ap_max_inactivity") == 0) {
1266 bss->ap_max_inactivity = atoi(pos);
1267 } else if (strcmp(buf, "country_code") == 0) {
1268 memcpy(conf->country, pos, 2);
1269 /* FIX: make this configurable */
1270 conf->country[2] = ' ';
1271 } else if (strcmp(buf, "ieee80211d") == 0) {
1272 conf->ieee80211d = atoi(pos);
1273 } else if (strcmp(buf, "ieee80211h") == 0) {
1274 conf->ieee80211h = atoi(pos);
1275 } else if (strcmp(buf, "assoc_ap_addr") == 0) {
1276 if (hwaddr_aton(pos, bss->assoc_ap_addr)) {
1277 printf("Line %d: invalid MAC address '%s'\n",
1278 line, pos);
1279 errors++;
1280 }
1281 bss->assoc_ap = 1;
1282 } else if (strcmp(buf, "ieee8021x") == 0) {
1283 bss->ieee802_1x = atoi(pos);
1284 } else if (strcmp(buf, "eapol_version") == 0) {
1285 bss->eapol_version = atoi(pos);
1286 if (bss->eapol_version < 1 ||
1287 bss->eapol_version > 2) {
1288 printf("Line %d: invalid EAPOL "
1289 "version (%d): '%s'.\n",
1290 line, bss->eapol_version, pos);
1291 errors++;
1292 } else
1293 wpa_printf(MSG_DEBUG, "eapol_version=%d",
1294 bss->eapol_version);
1295 #ifdef EAP_SERVER
1296 } else if (strcmp(buf, "eap_authenticator") == 0) {
1297 bss->eap_server = atoi(pos);
1298 printf("Line %d: obsolete eap_authenticator used; "
1299 "this has been renamed to eap_server\n", line);
1300 } else if (strcmp(buf, "eap_server") == 0) {
1301 bss->eap_server = atoi(pos);
1302 } else if (strcmp(buf, "eap_user_file") == 0) {
1303 if (hostapd_config_read_eap_user(pos, bss))
1304 errors++;
1305 } else if (strcmp(buf, "ca_cert") == 0) {
1306 free(bss->ca_cert);
1307 bss->ca_cert = strdup(pos);
1308 } else if (strcmp(buf, "server_cert") == 0) {
1309 free(bss->server_cert);
1310 bss->server_cert = strdup(pos);
1311 } else if (strcmp(buf, "private_key") == 0) {
1312 free(bss->private_key);
1313 bss->private_key = strdup(pos);
1314 } else if (strcmp(buf, "private_key_passwd") == 0) {
1315 free(bss->private_key_passwd);
1316 bss->private_key_passwd = strdup(pos);
1317 } else if (strcmp(buf, "check_crl") == 0) {
1318 bss->check_crl = atoi(pos);
1319 #ifdef EAP_SIM
1320 } else if (strcmp(buf, "eap_sim_db") == 0) {
1321 free(bss->eap_sim_db);
1322 bss->eap_sim_db = strdup(pos);
1323 #endif /* EAP_SIM */
1324 #endif /* EAP_SERVER */
1325 } else if (strcmp(buf, "eap_message") == 0) {
1326 char *term;
1327 bss->eap_req_id_text = strdup(pos);
1328 if (bss->eap_req_id_text == NULL) {
1329 printf("Line %d: Failed to allocate memory "
1330 "for eap_req_id_text\n", line);
1331 errors++;
1332 continue;
1333 }
1334 bss->eap_req_id_text_len =
1335 strlen(bss->eap_req_id_text);
1336 term = strstr(bss->eap_req_id_text, "\\0");
1337 if (term) {
1338 *term++ = '\0';
1339 memmove(term, term + 1,
1340 bss->eap_req_id_text_len -
1341 (term - bss->eap_req_id_text) - 1);
1342 bss->eap_req_id_text_len--;
1343 }
1344 } else if (strcmp(buf, "wep_key_len_broadcast") == 0) {
1345 bss->default_wep_key_len = atoi(pos);
1346 if (bss->default_wep_key_len > 13) {
1347 printf("Line %d: invalid WEP key len %lu "
1348 "(= %lu bits)\n", line,
1349 (unsigned long)
1350 bss->default_wep_key_len,
1351 (unsigned long)
1352 bss->default_wep_key_len * 8);
1353 errors++;
1354 }
1355 } else if (strcmp(buf, "wep_key_len_unicast") == 0) {
1356 bss->individual_wep_key_len = atoi(pos);
1357 if (bss->individual_wep_key_len < 0 ||
1358 bss->individual_wep_key_len > 13) {
1359 printf("Line %d: invalid WEP key len %d "
1360 "(= %d bits)\n", line,
1361 bss->individual_wep_key_len,
1362 bss->individual_wep_key_len * 8);
1363 errors++;
1364 }
1365 } else if (strcmp(buf, "wep_rekey_period") == 0) {
1366 bss->wep_rekeying_period = atoi(pos);
1367 if (bss->wep_rekeying_period < 0) {
1368 printf("Line %d: invalid period %d\n",
1369 line, bss->wep_rekeying_period);
1370 errors++;
1371 }
1372 } else if (strcmp(buf, "eap_reauth_period") == 0) {
1373 bss->eap_reauth_period = atoi(pos);
1374 if (bss->eap_reauth_period < 0) {
1375 printf("Line %d: invalid period %d\n",
1376 line, bss->eap_reauth_period);
1377 errors++;
1378 }
1379 } else if (strcmp(buf, "eapol_key_index_workaround") == 0) {
1380 bss->eapol_key_index_workaround = atoi(pos);
1381 #ifdef CONFIG_IAPP
1382 } else if (strcmp(buf, "iapp_interface") == 0) {
1383 bss->ieee802_11f = 1;
1384 snprintf(bss->iapp_iface, sizeof(bss->iapp_iface),
1385 "%s", pos);
1386 #endif /* CONFIG_IAPP */
1387 } else if (strcmp(buf, "own_ip_addr") == 0) {
1388 if (hostapd_parse_ip_addr(pos, &bss->own_ip_addr)) {
1389 printf("Line %d: invalid IP address '%s'\n",
1390 line, pos);
1391 errors++;
1392 }
1393 } else if (strcmp(buf, "nas_identifier") == 0) {
1394 bss->nas_identifier = strdup(pos);
1395 } else if (strcmp(buf, "auth_server_addr") == 0) {
1396 if (hostapd_config_read_radius_addr(
1397 &bss->radius->auth_servers,
1398 &bss->radius->num_auth_servers, pos, 1812,
1399 &bss->radius->auth_server)) {
1400 printf("Line %d: invalid IP address '%s'\n",
1401 line, pos);
1402 errors++;
1403 }
1404 } else if (bss->radius->auth_server &&
1405 strcmp(buf, "auth_server_port") == 0) {
1406 bss->radius->auth_server->port = atoi(pos);
1407 } else if (bss->radius->auth_server &&
1408 strcmp(buf, "auth_server_shared_secret") == 0) {
1409 int len = strlen(pos);
1410 if (len == 0) {
1411 /* RFC 2865, Ch. 3 */
1412 printf("Line %d: empty shared secret is not "
1413 "allowed.\n", line);
1414 errors++;
1415 }
1416 bss->radius->auth_server->shared_secret =
1417 (u8 *) strdup(pos);
1418 bss->radius->auth_server->shared_secret_len = len;
1419 } else if (strcmp(buf, "acct_server_addr") == 0) {
1420 if (hostapd_config_read_radius_addr(
1421 &bss->radius->acct_servers,
1422 &bss->radius->num_acct_servers, pos, 1813,
1423 &bss->radius->acct_server)) {
1424 printf("Line %d: invalid IP address '%s'\n",
1425 line, pos);
1426 errors++;
1427 }
1428 } else if (bss->radius->acct_server &&
1429 strcmp(buf, "acct_server_port") == 0) {
1430 bss->radius->acct_server->port = atoi(pos);
1431 } else if (bss->radius->acct_server &&
1432 strcmp(buf, "acct_server_shared_secret") == 0) {
1433 int len = strlen(pos);
1434 if (len == 0) {
1435 /* RFC 2865, Ch. 3 */
1436 printf("Line %d: empty shared secret is not "
1437 "allowed.\n", line);
1438 errors++;
1439 }
1440 bss->radius->acct_server->shared_secret =
1441 (u8 *) strdup(pos);
1442 bss->radius->acct_server->shared_secret_len = len;
1443 } else if (strcmp(buf, "radius_retry_primary_interval") == 0) {
1444 bss->radius->retry_primary_interval = atoi(pos);
1445 } else if (strcmp(buf, "radius_acct_interim_interval") == 0) {
1446 bss->radius->acct_interim_interval = atoi(pos);
1447 } else if (strcmp(buf, "auth_algs") == 0) {
1448 bss->auth_algs = atoi(pos);
1449 if (bss->auth_algs == 0) {
1450 printf("Line %d: no authentication algorithms "
1451 "allowed\n",
1452 line);
1453 errors++;
1454 }
1455 } else if (strcmp(buf, "max_num_sta") == 0) {
1456 bss->max_num_sta = atoi(pos);
1457 if (bss->max_num_sta < 0 ||
1458 bss->max_num_sta > MAX_STA_COUNT) {
1459 printf("Line %d: Invalid max_num_sta=%d; "
1460 "allowed range 0..%d\n", line,
1461 bss->max_num_sta, MAX_STA_COUNT);
1462 errors++;
1463 }
1464 } else if (strcmp(buf, "wpa") == 0) {
1465 bss->wpa = atoi(pos);
1466 } else if (strcmp(buf, "wpa_group_rekey") == 0) {
1467 bss->wpa_group_rekey = atoi(pos);
1468 } else if (strcmp(buf, "wpa_strict_rekey") == 0) {
1469 bss->wpa_strict_rekey = atoi(pos);
1470 } else if (strcmp(buf, "wpa_gmk_rekey") == 0) {
1471 bss->wpa_gmk_rekey = atoi(pos);
1472 } else if (strcmp(buf, "wpa_passphrase") == 0) {
1473 int len = strlen(pos);
1474 if (len < 8 || len > 63) {
1475 printf("Line %d: invalid WPA passphrase length"
1476 " %d (expected 8..63)\n", line, len);
1477 errors++;
1478 } else {
1479 free(bss->ssid.wpa_passphrase);
1480 bss->ssid.wpa_passphrase = strdup(pos);
1481 }
1482 } else if (strcmp(buf, "wpa_psk") == 0) {
1483 free(bss->ssid.wpa_psk);
1484 bss->ssid.wpa_psk =
1485 wpa_zalloc(sizeof(struct hostapd_wpa_psk));
1486 if (bss->ssid.wpa_psk == NULL)
1487 errors++;
1488 else if (hexstr2bin(pos, bss->ssid.wpa_psk->psk,
1489 PMK_LEN) ||
1490 pos[PMK_LEN * 2] != '\0') {
1491 printf("Line %d: Invalid PSK '%s'.\n", line,
1492 pos);
1493 errors++;
1494 } else {
1495 bss->ssid.wpa_psk->group = 1;
1496 }
1497 } else if (strcmp(buf, "wpa_psk_file") == 0) {
1498 free(bss->ssid.wpa_psk_file);
1499 bss->ssid.wpa_psk_file = strdup(pos);
1500 if (!bss->ssid.wpa_psk_file) {
1501 printf("Line %d: allocation failed\n", line);
1502 errors++;
1503 }
1504 } else if (strcmp(buf, "wpa_key_mgmt") == 0) {
1505 bss->wpa_key_mgmt =
1506 hostapd_config_parse_key_mgmt(line, pos);
1507 if (bss->wpa_key_mgmt == -1)
1508 errors++;
1509 } else if (strcmp(buf, "wpa_pairwise") == 0) {
1510 bss->wpa_pairwise =
1511 hostapd_config_parse_cipher(line, pos);
1512 if (bss->wpa_pairwise == -1 ||
1513 bss->wpa_pairwise == 0)
1514 errors++;
1515 else if (bss->wpa_pairwise &
1516 (WPA_CIPHER_NONE | WPA_CIPHER_WEP40 |
1517 WPA_CIPHER_WEP104)) {
1518 printf("Line %d: unsupported pairwise "
1519 "cipher suite '%s'\n",
1520 bss->wpa_pairwise, pos);
1521 errors++;
1522 } else {
1523 if (bss->wpa_pairwise & WPA_CIPHER_TKIP)
1524 bss->wpa_group = WPA_CIPHER_TKIP;
1525 else
1526 bss->wpa_group = WPA_CIPHER_CCMP;
1527 }
1528 #ifdef CONFIG_RSN_PREAUTH
1529 } else if (strcmp(buf, "rsn_preauth") == 0) {
1530 bss->rsn_preauth = atoi(pos);
1531 } else if (strcmp(buf, "rsn_preauth_interfaces") == 0) {
1532 bss->rsn_preauth_interfaces = strdup(pos);
1533 #endif /* CONFIG_RSN_PREAUTH */
1534 #ifdef CONFIG_PEERKEY
1535 } else if (strcmp(buf, "peerkey") == 0) {
1536 bss->peerkey = atoi(pos);
1537 #endif /* CONFIG_PEERKEY */
1538 } else if (strcmp(buf, "ctrl_interface") == 0) {
1539 free(bss->ctrl_interface);
1540 bss->ctrl_interface = strdup(pos);
1541 } else if (strcmp(buf, "ctrl_interface_group") == 0) {
1542 #ifndef CONFIG_NATIVE_WINDOWS
1543 struct group *grp;
1544 char *endp;
1545 const char *group = pos;
1546
1547 grp = getgrnam(group);
1548 if (grp) {
1549 bss->ctrl_interface_gid = grp->gr_gid;
1550 bss->ctrl_interface_gid_set = 1;
1551 wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d"
1552 " (from group name '%s')",
1553 bss->ctrl_interface_gid, group);
1554 continue;
1555 }
1556
1557 /* Group name not found - try to parse this as gid */
1558 bss->ctrl_interface_gid = strtol(group, &endp, 10);
1559 if (*group == '\0' || *endp != '\0') {
1560 wpa_printf(MSG_DEBUG, "Line %d: Invalid group "
1561 "'%s'", line, group);
1562 errors++;
1563 continue;
1564 }
1565 bss->ctrl_interface_gid_set = 1;
1566 wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d",
1567 bss->ctrl_interface_gid);
1568 #endif /* CONFIG_NATIVE_WINDOWS */
1569 #ifdef RADIUS_SERVER
1570 } else if (strcmp(buf, "radius_server_clients") == 0) {
1571 free(bss->radius_server_clients);
1572 bss->radius_server_clients = strdup(pos);
1573 } else if (strcmp(buf, "radius_server_auth_port") == 0) {
1574 bss->radius_server_auth_port = atoi(pos);
1575 } else if (strcmp(buf, "radius_server_ipv6") == 0) {
1576 bss->radius_server_ipv6 = atoi(pos);
1577 #endif /* RADIUS_SERVER */
1578 } else if (strcmp(buf, "test_socket") == 0) {
1579 free(bss->test_socket);
1580 bss->test_socket = strdup(pos);
1581 } else if (strcmp(buf, "use_pae_group_addr") == 0) {
1582 bss->use_pae_group_addr = atoi(pos);
1583 } else if (strcmp(buf, "hw_mode") == 0) {
1584 if (strcmp(pos, "a") == 0)
1585 conf->hw_mode = HOSTAPD_MODE_IEEE80211A;
1586 else if (strcmp(pos, "b") == 0)
1587 conf->hw_mode = HOSTAPD_MODE_IEEE80211B;
1588 else if (strcmp(pos, "g") == 0)
1589 conf->hw_mode = HOSTAPD_MODE_IEEE80211G;
1590 else {
1591 printf("Line %d: unknown hw_mode '%s'\n",
1592 line, pos);
1593 errors++;
1594 }
1595 } else if (strcmp(buf, "channel") == 0) {
1596 conf->channel = atoi(pos);
1597 } else if (strcmp(buf, "beacon_int") == 0) {
1598 int val = atoi(pos);
1599 /* MIB defines range as 1..65535, but very small values
1600 * cause problems with the current implementation.
1601 * Since it is unlikely that this small numbers are
1602 * useful in real life scenarios, do not allow beacon
1603 * period to be set below 15 TU. */
1604 if (val < 15 || val > 65535) {
1605 printf("Line %d: invalid beacon_int %d "
1606 "(expected 15..65535)\n",
1607 line, val);
1608 errors++;
1609 } else
1610 conf->beacon_int = val;
1611 } else if (strcmp(buf, "dtim_period") == 0) {
1612 bss->dtim_period = atoi(pos);
1613 if (bss->dtim_period < 1 || bss->dtim_period > 255) {
1614 printf("Line %d: invalid dtim_period %d\n",
1615 line, bss->dtim_period);
1616 errors++;
1617 }
1618 } else if (strcmp(buf, "rts_threshold") == 0) {
1619 conf->rts_threshold = atoi(pos);
1620 if (conf->rts_threshold < 0 ||
1621 conf->rts_threshold > 2347) {
1622 printf("Line %d: invalid rts_threshold %d\n",
1623 line, conf->rts_threshold);
1624 errors++;
1625 }
1626 } else if (strcmp(buf, "fragm_threshold") == 0) {
1627 conf->fragm_threshold = atoi(pos);
1628 if (conf->fragm_threshold < 256 ||
1629 conf->fragm_threshold > 2346) {
1630 printf("Line %d: invalid fragm_threshold %d\n",
1631 line, conf->fragm_threshold);
1632 errors++;
1633 }
1634 } else if (strcmp(buf, "send_probe_response") == 0) {
1635 int val = atoi(pos);
1636 if (val != 0 && val != 1) {
1637 printf("Line %d: invalid send_probe_response "
1638 "%d (expected 0 or 1)\n", line, val);
1639 } else
1640 conf->send_probe_response = val;
1641 } else if (strcmp(buf, "supported_rates") == 0) {
1642 if (hostapd_parse_rates(&conf->supported_rates, pos)) {
1643 printf("Line %d: invalid rate list\n", line);
1644 errors++;
1645 }
1646 } else if (strcmp(buf, "basic_rates") == 0) {
1647 if (hostapd_parse_rates(&conf->basic_rates, pos)) {
1648 printf("Line %d: invalid rate list\n", line);
1649 errors++;
1650 }
1651 } else if (strcmp(buf, "ignore_broadcast_ssid") == 0) {
1652 bss->ignore_broadcast_ssid = atoi(pos);
1653 } else if (strcmp(buf, "bridge_packets") == 0) {
1654 conf->bridge_packets = atoi(pos);
1655 } else if (strcmp(buf, "wep_default_key") == 0) {
1656 bss->ssid.wep.idx = atoi(pos);
1657 if (bss->ssid.wep.idx > 3) {
1658 printf("Invalid wep_default_key index %d\n",
1659 bss->ssid.wep.idx);
1660 errors++;
1661 }
1662 } else if (strcmp(buf, "wep_key0") == 0 ||
1663 strcmp(buf, "wep_key1") == 0 ||
1664 strcmp(buf, "wep_key2") == 0 ||
1665 strcmp(buf, "wep_key3") == 0) {
1666 if (hostapd_config_read_wep(&bss->ssid.wep,
1667 buf[7] - '0', pos)) {
1668 printf("Line %d: invalid WEP key '%s'\n",
1669 line, buf);
1670 errors++;
1671 }
1672 } else if (strcmp(buf, "dynamic_vlan") == 0) {
1673 bss->ssid.dynamic_vlan = atoi(pos);
1674 } else if (strcmp(buf, "vlan_file") == 0) {
1675 if (hostapd_config_read_vlan_file(bss, pos)) {
1676 printf("Line %d: failed to read VLAN file "
1677 "'%s'\n", line, pos);
1678 errors++;
1679 }
1680 #ifdef CONFIG_FULL_DYNAMIC_VLAN
1681 } else if (strcmp(buf, "vlan_tagged_interface") == 0) {
1682 bss->ssid.vlan_tagged_interface = strdup(pos);
1683 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
1684 } else if (strcmp(buf, "passive_scan_interval") == 0) {
1685 conf->passive_scan_interval = atoi(pos);
1686 } else if (strcmp(buf, "passive_scan_listen") == 0) {
1687 conf->passive_scan_listen = atoi(pos);
1688 } else if (strcmp(buf, "passive_scan_mode") == 0) {
1689 conf->passive_scan_mode = atoi(pos);
1690 } else if (strcmp(buf, "ap_table_max_size") == 0) {
1691 conf->ap_table_max_size = atoi(pos);
1692 } else if (strcmp(buf, "ap_table_expiration_time") == 0) {
1693 conf->ap_table_expiration_time = atoi(pos);
1694 } else if (strncmp(buf, "tx_queue_", 9) == 0) {
1695 if (hostapd_config_tx_queue(conf, buf, pos)) {
1696 printf("Line %d: invalid TX queue item\n",
1697 line);
1698 errors++;
1699 }
1700 } else if (strcmp(buf, "wme_enabled") == 0) {
1701 bss->wme_enabled = atoi(pos);
1702 } else if (strncmp(buf, "wme_ac_", 7) == 0) {
1703 if (hostapd_config_wme_ac(conf, buf, pos)) {
1704 printf("Line %d: invalid wme ac item\n",
1705 line);
1706 errors++;
1707 }
1708 } else if (strcmp(buf, "bss") == 0) {
1709 if (hostapd_config_bss(conf, pos)) {
1710 printf("Line %d: invalid bss item\n", line);
1711 errors++;
1712 }
1713 } else if (strcmp(buf, "bssid") == 0) {
1714 if (bss == conf->bss) {
1715 printf("Line %d: bssid item not allowed "
1716 "for the default interface\n", line);
1717 errors++;
1718 } else if (hwaddr_aton(pos, bss->bssid)) {
1719 printf("Line %d: invalid bssid item\n", line);
1720 errors++;
1721 }
1722 #ifdef CONFIG_IEEE80211W
1723 } else if (strcmp(buf, "ieee80211w") == 0) {
1724 bss->ieee80211w = atoi(pos);
1725 #endif /* CONFIG_IEEE80211W */
1726 } else {
1727 printf("Line %d: unknown configuration item '%s'\n",
1728 line, buf);
1729 errors++;
1730 }
1731 }
1732
1733 fclose(f);
1734
1735 if (bss->individual_wep_key_len == 0) {
1736 /* individual keys are not use; can use key idx0 for broadcast
1737 * keys */
1738 bss->broadcast_key_idx_min = 0;
1739 }
1740
1741 for (i = 0; i < conf->num_bss; i++) {
1742 bss = &conf->bss[i];
1743
1744 bss->radius->auth_server = bss->radius->auth_servers;
1745 bss->radius->acct_server = bss->radius->acct_servers;
1746
1747 if (bss->wpa && bss->ieee802_1x) {
1748 bss->ssid.security_policy = SECURITY_WPA;
1749 } else if (bss->wpa) {
1750 bss->ssid.security_policy = SECURITY_WPA_PSK;
1751 } else if (bss->ieee802_1x) {
1752 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
1753 bss->ssid.wep.default_len = bss->default_wep_key_len;
1754 } else if (bss->ssid.wep.keys_set)
1755 bss->ssid.security_policy = SECURITY_STATIC_WEP;
1756 else
1757 bss->ssid.security_policy = SECURITY_PLAINTEXT;
1758 }
1759
1760 if (hostapd_config_check(conf))
1761 errors++;
1762
1763 if (errors) {
1764 printf("%d errors found in configuration file '%s'\n",
1765 errors, fname);
1766 hostapd_config_free(conf);
1767 conf = NULL;
1768 }
1769
1770 return conf;
1771 }
1772
1773
1774 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
1775 {
1776 int i;
1777
1778 if (a->idx != b->idx || a->default_len != b->default_len)
1779 return 1;
1780 for (i = 0; i < NUM_WEP_KEYS; i++)
1781 if (a->len[i] != b->len[i] ||
1782 memcmp(a->key[i], b->key[i], a->len[i]) != 0)
1783 return 1;
1784 return 0;
1785 }
1786
1787
1788 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
1789 int num_servers)
1790 {
1791 int i;
1792
1793 for (i = 0; i < num_servers; i++) {
1794 free(servers[i].shared_secret);
1795 }
1796 free(servers);
1797 }
1798
1799
1800 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
1801 {
1802 free(user->identity);
1803 free(user->password);
1804 free(user);
1805 }
1806
1807
1808 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
1809 {
1810 int i;
1811 for (i = 0; i < NUM_WEP_KEYS; i++) {
1812 free(keys->key[i]);
1813 keys->key[i] = NULL;
1814 }
1815 }
1816
1817
1818 static void hostapd_config_free_bss(struct hostapd_bss_config *conf)
1819 {
1820 struct hostapd_wpa_psk *psk, *prev;
1821 struct hostapd_eap_user *user, *prev_user;
1822
1823 if (conf == NULL)
1824 return;
1825
1826 psk = conf->ssid.wpa_psk;
1827 while (psk) {
1828 prev = psk;
1829 psk = psk->next;
1830 free(prev);
1831 }
1832
1833 free(conf->ssid.wpa_passphrase);
1834 free(conf->ssid.wpa_psk_file);
1835 #ifdef CONFIG_FULL_DYNAMIC_VLAN
1836 free(conf->ssid.vlan_tagged_interface);
1837 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
1838
1839 user = conf->eap_user;
1840 while (user) {
1841 prev_user = user;
1842 user = user->next;
1843 hostapd_config_free_eap_user(prev_user);
1844 }
1845
1846 free(conf->dump_log_name);
1847 free(conf->eap_req_id_text);
1848 free(conf->accept_mac);
1849 free(conf->deny_mac);
1850 free(conf->nas_identifier);
1851 hostapd_config_free_radius(conf->radius->auth_servers,
1852 conf->radius->num_auth_servers);
1853 hostapd_config_free_radius(conf->radius->acct_servers,
1854 conf->radius->num_acct_servers);
1855 free(conf->rsn_preauth_interfaces);
1856 free(conf->ctrl_interface);
1857 free(conf->ca_cert);
1858 free(conf->server_cert);
1859 free(conf->private_key);
1860 free(conf->private_key_passwd);
1861 free(conf->eap_sim_db);
1862 free(conf->radius_server_clients);
1863 free(conf->test_socket);
1864 free(conf->radius);
1865 hostapd_config_free_vlan(conf);
1866 if (conf->ssid.dyn_vlan_keys) {
1867 struct hostapd_ssid *ssid = &conf->ssid;
1868 size_t i;
1869 for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
1870 if (ssid->dyn_vlan_keys[i] == NULL)
1871 continue;
1872 hostapd_config_free_wep(ssid->dyn_vlan_keys[i]);
1873 free(ssid->dyn_vlan_keys[i]);
1874 }
1875 free(ssid->dyn_vlan_keys);
1876 ssid->dyn_vlan_keys = NULL;
1877 }
1878 }
1879
1880
1881 void hostapd_config_free(struct hostapd_config *conf)
1882 {
1883 size_t i;
1884
1885 if (conf == NULL)
1886 return;
1887
1888 for (i = 0; i < conf->num_bss; i++)
1889 hostapd_config_free_bss(&conf->bss[i]);
1890 free(conf->bss);
1891
1892 free(conf);
1893 }
1894
1895
1896 /* Perform a binary search for given MAC address from a pre-sorted list.
1897 * Returns 1 if address is in the list or 0 if not. */
1898 int hostapd_maclist_found(macaddr *list, int num_entries, const u8 *addr)
1899 {
1900 int start, end, middle, res;
1901
1902 start = 0;
1903 end = num_entries - 1;
1904
1905 while (start <= end) {
1906 middle = (start + end) / 2;
1907 res = memcmp(list[middle], addr, ETH_ALEN);
1908 if (res == 0)
1909 return 1;
1910 if (res < 0)
1911 start = middle + 1;
1912 else
1913 end = middle - 1;
1914 }
1915
1916 return 0;
1917 }
1918
1919
1920 int hostapd_rate_found(int *list, int rate)
1921 {
1922 int i;
1923
1924 if (list == NULL)
1925 return 0;
1926
1927 for (i = 0; list[i] >= 0; i++)
1928 if (list[i] == rate)
1929 return 1;
1930
1931 return 0;
1932 }
1933
1934
1935 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
1936 {
1937 struct hostapd_vlan *v = vlan;
1938 while (v) {
1939 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
1940 return v->ifname;
1941 v = v->next;
1942 }
1943 return NULL;
1944 }
1945
1946
1947 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
1948 const u8 *addr, const u8 *prev_psk)
1949 {
1950 struct hostapd_wpa_psk *psk;
1951 int next_ok = prev_psk == NULL;
1952
1953 for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
1954 if (next_ok &&
1955 (psk->group || memcmp(psk->addr, addr, ETH_ALEN) == 0))
1956 return psk->psk;
1957
1958 if (psk->psk == prev_psk)
1959 next_ok = 1;
1960 }
1961
1962 return NULL;
1963 }
1964
1965
1966 const struct hostapd_eap_user *
1967 hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
1968 size_t identity_len, int phase2)
1969 {
1970 struct hostapd_eap_user *user = conf->eap_user;
1971
1972 while (user) {
1973 if (!phase2 && user->identity == NULL) {
1974 /* Wildcard match */
1975 break;
1976 }
1977
1978 if (!phase2 && user->wildcard_prefix &&
1979 identity_len >= user->identity_len &&
1980 memcmp(user->identity, identity, user->identity_len) == 0)
1981 {
1982 /* Wildcard prefix match */
1983 break;
1984 }
1985
1986 if (user->phase2 == !!phase2 &&
1987 user->identity_len == identity_len &&
1988 memcmp(user->identity, identity, identity_len) == 0)
1989 break;
1990 user = user->next;
1991 }
1992
1993 return user;
1994 }
DragonFly BSD