Merge branch 'vendor/LIBEDIT'
[dragonfly.git] / contrib / hostapd / src / ap / ap_config.c
1 /*
2  * hostapd / Configuration helper functions
3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "crypto/sha1.h"
13 #include "radius/radius_client.h"
14 #include "common/ieee802_11_defs.h"
15 #include "common/eapol_common.h"
16 #include "eap_common/eap_wsc_common.h"
17 #include "eap_server/eap.h"
18 #include "wpa_auth.h"
19 #include "sta_info.h"
20 #include "ap_config.h"
21
22
23 static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
24 {
25         struct hostapd_vlan *vlan, *prev;
26
27         vlan = bss->vlan;
28         prev = NULL;
29         while (vlan) {
30                 prev = vlan;
31                 vlan = vlan->next;
32                 os_free(prev);
33         }
34
35         bss->vlan = NULL;
36 }
37
38
39 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
40 {
41         bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
42         bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
43         bss->logger_syslog = (unsigned int) -1;
44         bss->logger_stdout = (unsigned int) -1;
45
46         bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
47
48         bss->wep_rekeying_period = 300;
49         /* use key0 in individual key and key1 in broadcast key */
50         bss->broadcast_key_idx_min = 1;
51         bss->broadcast_key_idx_max = 2;
52         bss->eap_reauth_period = 3600;
53
54         bss->wpa_group_rekey = 600;
55         bss->wpa_gmk_rekey = 86400;
56         bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
57         bss->wpa_pairwise = WPA_CIPHER_TKIP;
58         bss->wpa_group = WPA_CIPHER_TKIP;
59         bss->rsn_pairwise = 0;
60
61         bss->max_num_sta = MAX_STA_COUNT;
62
63         bss->dtim_period = 2;
64
65         bss->radius_server_auth_port = 1812;
66         bss->ap_max_inactivity = AP_MAX_INACTIVITY;
67         bss->eapol_version = EAPOL_VERSION;
68
69         bss->max_listen_interval = 65535;
70
71         bss->pwd_group = 19; /* ECC: GF(p=256) */
72
73 #ifdef CONFIG_IEEE80211W
74         bss->assoc_sa_query_max_timeout = 1000;
75         bss->assoc_sa_query_retry_timeout = 201;
76 #endif /* CONFIG_IEEE80211W */
77 #ifdef EAP_SERVER_FAST
78          /* both anonymous and authenticated provisioning */
79         bss->eap_fast_prov = 3;
80         bss->pac_key_lifetime = 7 * 24 * 60 * 60;
81         bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
82 #endif /* EAP_SERVER_FAST */
83
84         /* Set to -1 as defaults depends on HT in setup */
85         bss->wmm_enabled = -1;
86
87 #ifdef CONFIG_IEEE80211R
88         bss->ft_over_ds = 1;
89 #endif /* CONFIG_IEEE80211R */
90
91         bss->radius_das_time_window = 300;
92
93         bss->sae_anti_clogging_threshold = 5;
94 }
95
96
97 struct hostapd_config * hostapd_config_defaults(void)
98 {
99 #define ecw2cw(ecw) ((1 << (ecw)) - 1)
100
101         struct hostapd_config *conf;
102         struct hostapd_bss_config *bss;
103         const int aCWmin = 4, aCWmax = 10;
104         const struct hostapd_wmm_ac_params ac_bk =
105                 { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
106         const struct hostapd_wmm_ac_params ac_be =
107                 { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
108         const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
109                 { aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
110         const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
111                 { aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
112         const struct hostapd_tx_queue_params txq_bk =
113                 { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
114         const struct hostapd_tx_queue_params txq_be =
115                 { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
116         const struct hostapd_tx_queue_params txq_vi =
117                 { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
118         const struct hostapd_tx_queue_params txq_vo =
119                 { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
120                   (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
121
122 #undef ecw2cw
123
124         conf = os_zalloc(sizeof(*conf));
125         bss = os_zalloc(sizeof(*bss));
126         if (conf == NULL || bss == NULL) {
127                 wpa_printf(MSG_ERROR, "Failed to allocate memory for "
128                            "configuration data.");
129                 os_free(conf);
130                 os_free(bss);
131                 return NULL;
132         }
133         conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
134         if (conf->bss == NULL) {
135                 os_free(conf);
136                 os_free(bss);
137                 return NULL;
138         }
139         conf->bss[0] = bss;
140
141         bss->radius = os_zalloc(sizeof(*bss->radius));
142         if (bss->radius == NULL) {
143                 os_free(conf->bss);
144                 os_free(conf);
145                 os_free(bss);
146                 return NULL;
147         }
148
149         hostapd_config_defaults_bss(bss);
150
151         conf->num_bss = 1;
152
153         conf->beacon_int = 100;
154         conf->rts_threshold = -1; /* use driver default: 2347 */
155         conf->fragm_threshold = -1; /* user driver default: 2346 */
156         conf->send_probe_response = 1;
157
158         conf->wmm_ac_params[0] = ac_be;
159         conf->wmm_ac_params[1] = ac_bk;
160         conf->wmm_ac_params[2] = ac_vi;
161         conf->wmm_ac_params[3] = ac_vo;
162
163         conf->tx_queue[0] = txq_vo;
164         conf->tx_queue[1] = txq_vi;
165         conf->tx_queue[2] = txq_be;
166         conf->tx_queue[3] = txq_bk;
167
168         conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
169
170         conf->ap_table_max_size = 255;
171         conf->ap_table_expiration_time = 60;
172
173 #ifdef CONFIG_TESTING_OPTIONS
174         conf->ignore_probe_probability = 0.0d;
175         conf->ignore_auth_probability = 0.0d;
176         conf->ignore_assoc_probability = 0.0d;
177         conf->ignore_reassoc_probability = 0.0d;
178         conf->corrupt_gtk_rekey_mic_probability = 0.0d;
179 #endif /* CONFIG_TESTING_OPTIONS */
180
181 #ifdef CONFIG_ACS
182         conf->acs_num_scans = 5;
183 #endif /* CONFIG_ACS */
184
185         return conf;
186 }
187
188
189 int hostapd_mac_comp(const void *a, const void *b)
190 {
191         return os_memcmp(a, b, sizeof(macaddr));
192 }
193
194
195 int hostapd_mac_comp_empty(const void *a)
196 {
197         macaddr empty = { 0 };
198         return os_memcmp(a, empty, sizeof(macaddr));
199 }
200
201
202 static int hostapd_config_read_wpa_psk(const char *fname,
203                                        struct hostapd_ssid *ssid)
204 {
205         FILE *f;
206         char buf[128], *pos;
207         int line = 0, ret = 0, len, ok;
208         u8 addr[ETH_ALEN];
209         struct hostapd_wpa_psk *psk;
210
211         if (!fname)
212                 return 0;
213
214         f = fopen(fname, "r");
215         if (!f) {
216                 wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
217                 return -1;
218         }
219
220         while (fgets(buf, sizeof(buf), f)) {
221                 line++;
222
223                 if (buf[0] == '#')
224                         continue;
225                 pos = buf;
226                 while (*pos != '\0') {
227                         if (*pos == '\n') {
228                                 *pos = '\0';
229                                 break;
230                         }
231                         pos++;
232                 }
233                 if (buf[0] == '\0')
234                         continue;
235
236                 if (hwaddr_aton(buf, addr)) {
237                         wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
238                                    "line %d in '%s'", buf, line, fname);
239                         ret = -1;
240                         break;
241                 }
242
243                 psk = os_zalloc(sizeof(*psk));
244                 if (psk == NULL) {
245                         wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
246                         ret = -1;
247                         break;
248                 }
249                 if (is_zero_ether_addr(addr))
250                         psk->group = 1;
251                 else
252                         os_memcpy(psk->addr, addr, ETH_ALEN);
253
254                 pos = buf + 17;
255                 if (*pos == '\0') {
256                         wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
257                                    line, fname);
258                         os_free(psk);
259                         ret = -1;
260                         break;
261                 }
262                 pos++;
263
264                 ok = 0;
265                 len = os_strlen(pos);
266                 if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
267                         ok = 1;
268                 else if (len >= 8 && len < 64) {
269                         pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
270                                     4096, psk->psk, PMK_LEN);
271                         ok = 1;
272                 }
273                 if (!ok) {
274                         wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
275                                    "'%s'", pos, line, fname);
276                         os_free(psk);
277                         ret = -1;
278                         break;
279                 }
280
281                 psk->next = ssid->wpa_psk;
282                 ssid->wpa_psk = psk;
283         }
284
285         fclose(f);
286
287         return ret;
288 }
289
290
291 static int hostapd_derive_psk(struct hostapd_ssid *ssid)
292 {
293         ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
294         if (ssid->wpa_psk == NULL) {
295                 wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
296                 return -1;
297         }
298         wpa_hexdump_ascii(MSG_DEBUG, "SSID",
299                           (u8 *) ssid->ssid, ssid->ssid_len);
300         wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
301                               (u8 *) ssid->wpa_passphrase,
302                               os_strlen(ssid->wpa_passphrase));
303         pbkdf2_sha1(ssid->wpa_passphrase,
304                     ssid->ssid, ssid->ssid_len,
305                     4096, ssid->wpa_psk->psk, PMK_LEN);
306         wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
307                         ssid->wpa_psk->psk, PMK_LEN);
308         return 0;
309 }
310
311
312 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
313 {
314         struct hostapd_ssid *ssid = &conf->ssid;
315
316         if (ssid->wpa_passphrase != NULL) {
317                 if (ssid->wpa_psk != NULL) {
318                         wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
319                                    "instead of passphrase");
320                 } else {
321                         wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
322                                    "passphrase");
323                         if (hostapd_derive_psk(ssid) < 0)
324                                 return -1;
325                 }
326                 ssid->wpa_psk->group = 1;
327         }
328
329         if (ssid->wpa_psk_file) {
330                 if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
331                                                 &conf->ssid))
332                         return -1;
333         }
334
335         return 0;
336 }
337
338
339 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a, struct hostapd_wep_keys *b)
340 {
341         int i;
342
343         if (a->idx != b->idx || a->default_len != b->default_len)
344                 return 1;
345         for (i = 0; i < NUM_WEP_KEYS; i++)
346                 if (a->len[i] != b->len[i] ||
347                     os_memcmp(a->key[i], b->key[i], a->len[i]) != 0)
348                         return 1;
349         return 0;
350 }
351
352
353 static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
354                                        int num_servers)
355 {
356         int i;
357
358         for (i = 0; i < num_servers; i++) {
359                 os_free(servers[i].shared_secret);
360         }
361         os_free(servers);
362 }
363
364
365 struct hostapd_radius_attr *
366 hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
367 {
368         for (; attr; attr = attr->next) {
369                 if (attr->type == type)
370                         return attr;
371         }
372         return NULL;
373 }
374
375
376 static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
377 {
378         struct hostapd_radius_attr *prev;
379
380         while (attr) {
381                 prev = attr;
382                 attr = attr->next;
383                 wpabuf_free(prev->val);
384                 os_free(prev);
385         }
386 }
387
388
389 static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
390 {
391         os_free(user->identity);
392         os_free(user->password);
393         os_free(user);
394 }
395
396
397 static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
398 {
399         int i;
400         for (i = 0; i < NUM_WEP_KEYS; i++) {
401                 os_free(keys->key[i]);
402                 keys->key[i] = NULL;
403         }
404 }
405
406
407 void hostapd_config_free_bss(struct hostapd_bss_config *conf)
408 {
409         struct hostapd_wpa_psk *psk, *prev;
410         struct hostapd_eap_user *user, *prev_user;
411
412         if (conf == NULL)
413                 return;
414
415         psk = conf->ssid.wpa_psk;
416         while (psk) {
417                 prev = psk;
418                 psk = psk->next;
419                 os_free(prev);
420         }
421
422         os_free(conf->ssid.wpa_passphrase);
423         os_free(conf->ssid.wpa_psk_file);
424         hostapd_config_free_wep(&conf->ssid.wep);
425 #ifdef CONFIG_FULL_DYNAMIC_VLAN
426         os_free(conf->ssid.vlan_tagged_interface);
427 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
428
429         user = conf->eap_user;
430         while (user) {
431                 prev_user = user;
432                 user = user->next;
433                 hostapd_config_free_eap_user(prev_user);
434         }
435         os_free(conf->eap_user_sqlite);
436
437         os_free(conf->eap_req_id_text);
438         os_free(conf->accept_mac);
439         os_free(conf->deny_mac);
440         os_free(conf->nas_identifier);
441         if (conf->radius) {
442                 hostapd_config_free_radius(conf->radius->auth_servers,
443                                            conf->radius->num_auth_servers);
444                 hostapd_config_free_radius(conf->radius->acct_servers,
445                                            conf->radius->num_acct_servers);
446         }
447         hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
448         hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
449         os_free(conf->rsn_preauth_interfaces);
450         os_free(conf->ctrl_interface);
451         os_free(conf->ca_cert);
452         os_free(conf->server_cert);
453         os_free(conf->private_key);
454         os_free(conf->private_key_passwd);
455         os_free(conf->ocsp_stapling_response);
456         os_free(conf->dh_file);
457         os_free(conf->pac_opaque_encr_key);
458         os_free(conf->eap_fast_a_id);
459         os_free(conf->eap_fast_a_id_info);
460         os_free(conf->eap_sim_db);
461         os_free(conf->radius_server_clients);
462         os_free(conf->test_socket);
463         os_free(conf->radius);
464         os_free(conf->radius_das_shared_secret);
465         hostapd_config_free_vlan(conf);
466         os_free(conf->time_zone);
467
468 #ifdef CONFIG_IEEE80211R
469         {
470                 struct ft_remote_r0kh *r0kh, *r0kh_prev;
471                 struct ft_remote_r1kh *r1kh, *r1kh_prev;
472
473                 r0kh = conf->r0kh_list;
474                 conf->r0kh_list = NULL;
475                 while (r0kh) {
476                         r0kh_prev = r0kh;
477                         r0kh = r0kh->next;
478                         os_free(r0kh_prev);
479                 }
480
481                 r1kh = conf->r1kh_list;
482                 conf->r1kh_list = NULL;
483                 while (r1kh) {
484                         r1kh_prev = r1kh;
485                         r1kh = r1kh->next;
486                         os_free(r1kh_prev);
487                 }
488         }
489 #endif /* CONFIG_IEEE80211R */
490
491 #ifdef CONFIG_WPS
492         os_free(conf->wps_pin_requests);
493         os_free(conf->device_name);
494         os_free(conf->manufacturer);
495         os_free(conf->model_name);
496         os_free(conf->model_number);
497         os_free(conf->serial_number);
498         os_free(conf->config_methods);
499         os_free(conf->ap_pin);
500         os_free(conf->extra_cred);
501         os_free(conf->ap_settings);
502         os_free(conf->upnp_iface);
503         os_free(conf->friendly_name);
504         os_free(conf->manufacturer_url);
505         os_free(conf->model_description);
506         os_free(conf->model_url);
507         os_free(conf->upc);
508         wpabuf_free(conf->wps_nfc_dh_pubkey);
509         wpabuf_free(conf->wps_nfc_dh_privkey);
510         wpabuf_free(conf->wps_nfc_dev_pw);
511 #endif /* CONFIG_WPS */
512
513         os_free(conf->roaming_consortium);
514         os_free(conf->venue_name);
515         os_free(conf->nai_realm_data);
516         os_free(conf->network_auth_type);
517         os_free(conf->anqp_3gpp_cell_net);
518         os_free(conf->domain_name);
519
520 #ifdef CONFIG_RADIUS_TEST
521         os_free(conf->dump_msk_file);
522 #endif /* CONFIG_RADIUS_TEST */
523
524 #ifdef CONFIG_HS20
525         os_free(conf->hs20_oper_friendly_name);
526         os_free(conf->hs20_wan_metrics);
527         os_free(conf->hs20_connection_capability);
528         os_free(conf->hs20_operating_class);
529 #endif /* CONFIG_HS20 */
530
531         wpabuf_free(conf->vendor_elements);
532
533         os_free(conf->sae_groups);
534
535         os_free(conf->server_id);
536
537         os_free(conf);
538 }
539
540
541 /**
542  * hostapd_config_free - Free hostapd configuration
543  * @conf: Configuration data from hostapd_config_read().
544  */
545 void hostapd_config_free(struct hostapd_config *conf)
546 {
547         size_t i;
548
549         if (conf == NULL)
550                 return;
551
552         for (i = 0; i < conf->num_bss; i++)
553                 hostapd_config_free_bss(conf->bss[i]);
554         os_free(conf->bss);
555         os_free(conf->supported_rates);
556         os_free(conf->basic_rates);
557
558         os_free(conf);
559 }
560
561
562 /**
563  * hostapd_maclist_found - Find a MAC address from a list
564  * @list: MAC address list
565  * @num_entries: Number of addresses in the list
566  * @addr: Address to search for
567  * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
568  * Returns: 1 if address is in the list or 0 if not.
569  *
570  * Perform a binary search for given MAC address from a pre-sorted list.
571  */
572 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
573                           const u8 *addr, int *vlan_id)
574 {
575         int start, end, middle, res;
576
577         start = 0;
578         end = num_entries - 1;
579
580         while (start <= end) {
581                 middle = (start + end) / 2;
582                 res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
583                 if (res == 0) {
584                         if (vlan_id)
585                                 *vlan_id = list[middle].vlan_id;
586                         return 1;
587                 }
588                 if (res < 0)
589                         start = middle + 1;
590                 else
591                         end = middle - 1;
592         }
593
594         return 0;
595 }
596
597
598 int hostapd_rate_found(int *list, int rate)
599 {
600         int i;
601
602         if (list == NULL)
603                 return 0;
604
605         for (i = 0; list[i] >= 0; i++)
606                 if (list[i] == rate)
607                         return 1;
608
609         return 0;
610 }
611
612
613 int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id)
614 {
615         struct hostapd_vlan *v = vlan;
616         while (v) {
617                 if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
618                         return 1;
619                 v = v->next;
620         }
621         return 0;
622 }
623
624
625 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
626 {
627         struct hostapd_vlan *v = vlan;
628         while (v) {
629                 if (v->vlan_id == vlan_id)
630                         return v->ifname;
631                 v = v->next;
632         }
633         return NULL;
634 }
635
636
637 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
638                            const u8 *addr, const u8 *p2p_dev_addr,
639                            const u8 *prev_psk)
640 {
641         struct hostapd_wpa_psk *psk;
642         int next_ok = prev_psk == NULL;
643
644         if (p2p_dev_addr) {
645                 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
646                            " p2p_dev_addr=" MACSTR " prev_psk=%p",
647                            MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
648                 if (!is_zero_ether_addr(p2p_dev_addr))
649                         addr = NULL; /* Use P2P Device Address for matching */
650         } else {
651                 wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
652                            " prev_psk=%p",
653                            MAC2STR(addr), prev_psk);
654         }
655
656         for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
657                 if (next_ok &&
658                     (psk->group ||
659                      (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
660                      (!addr && p2p_dev_addr &&
661                       os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
662                       0)))
663                         return psk->psk;
664
665                 if (psk->psk == prev_psk)
666                         next_ok = 1;
667         }
668
669         return NULL;
670 }
671
672
673 static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
674                                     struct hostapd_config *conf,
675                                     int full_config)
676 {
677         if (full_config && bss->ieee802_1x && !bss->eap_server &&
678             !bss->radius->auth_servers) {
679                 wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
680                            "EAP authenticator configured).");
681                 return -1;
682         }
683
684         if (bss->wpa) {
685                 int wep, i;
686
687                 wep = bss->default_wep_key_len > 0 ||
688                        bss->individual_wep_key_len > 0;
689                 for (i = 0; i < NUM_WEP_KEYS; i++) {
690                         if (bss->ssid.wep.keys_set) {
691                                 wep = 1;
692                                 break;
693                         }
694                 }
695
696                 if (wep) {
697                         wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
698                         return -1;
699                 }
700         }
701
702         if (full_config && bss->wpa &&
703             bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
704             bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
705                 wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
706                            "RADIUS checking (macaddr_acl=2) enabled.");
707                 return -1;
708         }
709
710         if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
711             bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
712             bss->ssid.wpa_psk_file == NULL &&
713             (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
714              bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
715                 wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
716                            "is not configured.");
717                 return -1;
718         }
719
720         if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) {
721                 size_t i;
722
723                 for (i = 0; i < conf->num_bss; i++) {
724                         if (conf->bss[i] != bss &&
725                             (hostapd_mac_comp(conf->bss[i]->bssid,
726                                               bss->bssid) == 0)) {
727                                 wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
728                                            " on interface '%s' and '%s'.",
729                                            MAC2STR(bss->bssid),
730                                            conf->bss[i]->iface, bss->iface);
731                                 return -1;
732                         }
733                 }
734         }
735
736 #ifdef CONFIG_IEEE80211R
737         if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
738             (bss->nas_identifier == NULL ||
739              os_strlen(bss->nas_identifier) < 1 ||
740              os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
741                 wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
742                            "nas_identifier to be configured as a 1..48 octet "
743                            "string");
744                 return -1;
745         }
746 #endif /* CONFIG_IEEE80211R */
747
748 #ifdef CONFIG_IEEE80211N
749         if (full_config && conf->ieee80211n &&
750             conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
751                 bss->disable_11n = 1;
752                 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
753                            "allowed, disabling HT capabilites");
754         }
755
756         if (full_config && conf->ieee80211n &&
757             bss->ssid.security_policy == SECURITY_STATIC_WEP) {
758                 bss->disable_11n = 1;
759                 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
760                            "allowed, disabling HT capabilities");
761         }
762
763         if (full_config && conf->ieee80211n && bss->wpa &&
764             !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
765             !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
766                                    WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
767         {
768                 bss->disable_11n = 1;
769                 wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
770                            "requires CCMP/GCMP to be enabled, disabling HT "
771                            "capabilities");
772         }
773 #endif /* CONFIG_IEEE80211N */
774
775 #ifdef CONFIG_WPS2
776         if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
777                 wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
778                            "configuration forced WPS to be disabled");
779                 bss->wps_state = 0;
780         }
781
782         if (full_config && bss->wps_state &&
783             bss->ssid.wep.keys_set && bss->wpa == 0) {
784                 wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
785                            "disabled");
786                 bss->wps_state = 0;
787         }
788
789         if (full_config && bss->wps_state && bss->wpa &&
790             (!(bss->wpa & 2) ||
791              !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) {
792                 wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
793                            "WPA2/CCMP forced WPS to be disabled");
794                 bss->wps_state = 0;
795         }
796 #endif /* CONFIG_WPS2 */
797
798 #ifdef CONFIG_HS20
799         if (full_config && bss->hs20 &&
800             (!(bss->wpa & 2) ||
801              !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
802                                     WPA_CIPHER_CCMP_256 |
803                                     WPA_CIPHER_GCMP_256)))) {
804                 wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
805                            "configuration is required for Hotspot 2.0 "
806                            "functionality");
807                 return -1;
808         }
809 #endif /* CONFIG_HS20 */
810
811         return 0;
812 }
813
814
815 int hostapd_config_check(struct hostapd_config *conf, int full_config)
816 {
817         size_t i;
818
819         if (full_config && conf->ieee80211d &&
820             (!conf->country[0] || !conf->country[1])) {
821                 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
822                            "setting the country_code");
823                 return -1;
824         }
825
826         if (full_config && conf->ieee80211h && !conf->ieee80211d) {
827                 wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
828                            "IEEE 802.11d enabled");
829                 return -1;
830         }
831
832         for (i = 0; i < conf->num_bss; i++) {
833                 if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
834                         return -1;
835         }
836
837         return 0;
838 }
839
840
841 void hostapd_set_security_params(struct hostapd_bss_config *bss)
842 {
843         if (bss->individual_wep_key_len == 0) {
844                 /* individual keys are not use; can use key idx0 for
845                  * broadcast keys */
846                 bss->broadcast_key_idx_min = 0;
847         }
848
849         if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
850                 bss->rsn_pairwise = bss->wpa_pairwise;
851         bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
852                                                     bss->rsn_pairwise);
853
854         bss->radius->auth_server = bss->radius->auth_servers;
855         bss->radius->acct_server = bss->radius->acct_servers;
856
857         if (bss->wpa && bss->ieee802_1x) {
858                 bss->ssid.security_policy = SECURITY_WPA;
859         } else if (bss->wpa) {
860                 bss->ssid.security_policy = SECURITY_WPA_PSK;
861         } else if (bss->ieee802_1x) {
862                 int cipher = WPA_CIPHER_NONE;
863                 bss->ssid.security_policy = SECURITY_IEEE_802_1X;
864                 bss->ssid.wep.default_len = bss->default_wep_key_len;
865                 if (bss->default_wep_key_len)
866                         cipher = bss->default_wep_key_len >= 13 ?
867                                 WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
868                 bss->wpa_group = cipher;
869                 bss->wpa_pairwise = cipher;
870                 bss->rsn_pairwise = cipher;
871         } else if (bss->ssid.wep.keys_set) {
872                 int cipher = WPA_CIPHER_WEP40;
873                 if (bss->ssid.wep.len[0] >= 13)
874                         cipher = WPA_CIPHER_WEP104;
875                 bss->ssid.security_policy = SECURITY_STATIC_WEP;
876                 bss->wpa_group = cipher;
877                 bss->wpa_pairwise = cipher;
878                 bss->rsn_pairwise = cipher;
879         } else {
880                 bss->ssid.security_policy = SECURITY_PLAINTEXT;
881                 bss->wpa_group = WPA_CIPHER_NONE;
882                 bss->wpa_pairwise = WPA_CIPHER_NONE;
883                 bss->rsn_pairwise = WPA_CIPHER_NONE;
884         }
885 }