Line data Source code
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 1357 : static void hostapd_config_free_vlan(struct hostapd_bss_config *bss)
24 : {
25 : struct hostapd_vlan *vlan, *prev;
26 :
27 1357 : vlan = bss->vlan;
28 1357 : prev = NULL;
29 2721 : while (vlan) {
30 7 : prev = vlan;
31 7 : vlan = vlan->next;
32 7 : os_free(prev);
33 : }
34 :
35 1357 : bss->vlan = NULL;
36 1357 : }
37 :
38 :
39 1357 : void hostapd_config_defaults_bss(struct hostapd_bss_config *bss)
40 : {
41 1357 : bss->logger_syslog_level = HOSTAPD_LEVEL_INFO;
42 1357 : bss->logger_stdout_level = HOSTAPD_LEVEL_INFO;
43 1357 : bss->logger_syslog = (unsigned int) -1;
44 1357 : bss->logger_stdout = (unsigned int) -1;
45 :
46 1357 : bss->auth_algs = WPA_AUTH_ALG_OPEN | WPA_AUTH_ALG_SHARED;
47 :
48 1357 : bss->wep_rekeying_period = 300;
49 : /* use key0 in individual key and key1 in broadcast key */
50 1357 : bss->broadcast_key_idx_min = 1;
51 1357 : bss->broadcast_key_idx_max = 2;
52 1357 : bss->eap_reauth_period = 3600;
53 :
54 1357 : bss->wpa_group_rekey = 600;
55 1357 : bss->wpa_gmk_rekey = 86400;
56 1357 : bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
57 1357 : bss->wpa_pairwise = WPA_CIPHER_TKIP;
58 1357 : bss->wpa_group = WPA_CIPHER_TKIP;
59 1357 : bss->rsn_pairwise = 0;
60 :
61 1357 : bss->max_num_sta = MAX_STA_COUNT;
62 :
63 1357 : bss->dtim_period = 2;
64 :
65 1357 : bss->radius_server_auth_port = 1812;
66 1357 : bss->ap_max_inactivity = AP_MAX_INACTIVITY;
67 1357 : bss->eapol_version = EAPOL_VERSION;
68 :
69 1357 : bss->max_listen_interval = 65535;
70 :
71 1357 : bss->pwd_group = 19; /* ECC: GF(p=256) */
72 :
73 : #ifdef CONFIG_IEEE80211W
74 1357 : bss->assoc_sa_query_max_timeout = 1000;
75 1357 : bss->assoc_sa_query_retry_timeout = 201;
76 1357 : bss->group_mgmt_cipher = WPA_CIPHER_AES_128_CMAC;
77 : #endif /* CONFIG_IEEE80211W */
78 : #ifdef EAP_SERVER_FAST
79 : /* both anonymous and authenticated provisioning */
80 1092 : bss->eap_fast_prov = 3;
81 1092 : bss->pac_key_lifetime = 7 * 24 * 60 * 60;
82 1092 : bss->pac_key_refresh_time = 1 * 24 * 60 * 60;
83 : #endif /* EAP_SERVER_FAST */
84 :
85 : /* Set to -1 as defaults depends on HT in setup */
86 1357 : bss->wmm_enabled = -1;
87 :
88 : #ifdef CONFIG_IEEE80211R
89 1357 : bss->ft_over_ds = 1;
90 : #endif /* CONFIG_IEEE80211R */
91 :
92 1357 : bss->radius_das_time_window = 300;
93 :
94 1357 : bss->sae_anti_clogging_threshold = 5;
95 1357 : }
96 :
97 :
98 1365 : struct hostapd_config * hostapd_config_defaults(void)
99 : {
100 : #define ecw2cw(ecw) ((1 << (ecw)) - 1)
101 :
102 : struct hostapd_config *conf;
103 : struct hostapd_bss_config *bss;
104 1365 : const int aCWmin = 4, aCWmax = 10;
105 1365 : const struct hostapd_wmm_ac_params ac_bk =
106 : { aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
107 1365 : const struct hostapd_wmm_ac_params ac_be =
108 : { aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
109 1365 : const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
110 1365 : { aCWmin - 1, aCWmin, 2, 3008 / 32, 0 };
111 2730 : const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
112 2730 : { aCWmin - 2, aCWmin - 1, 2, 1504 / 32, 0 };
113 4095 : const struct hostapd_tx_queue_params txq_bk =
114 2730 : { 7, ecw2cw(aCWmin), ecw2cw(aCWmax), 0 };
115 4095 : const struct hostapd_tx_queue_params txq_be =
116 2730 : { 3, ecw2cw(aCWmin), 4 * (ecw2cw(aCWmin) + 1) - 1, 0};
117 4095 : const struct hostapd_tx_queue_params txq_vi =
118 2730 : { 1, (ecw2cw(aCWmin) + 1) / 2 - 1, ecw2cw(aCWmin), 30};
119 4095 : const struct hostapd_tx_queue_params txq_vo =
120 1365 : { 1, (ecw2cw(aCWmin) + 1) / 4 - 1,
121 1365 : (ecw2cw(aCWmin) + 1) / 2 - 1, 15};
122 :
123 : #undef ecw2cw
124 :
125 1365 : conf = os_zalloc(sizeof(*conf));
126 1365 : bss = os_zalloc(sizeof(*bss));
127 1365 : if (conf == NULL || bss == NULL) {
128 10 : wpa_printf(MSG_ERROR, "Failed to allocate memory for "
129 : "configuration data.");
130 10 : os_free(conf);
131 10 : os_free(bss);
132 10 : return NULL;
133 : }
134 1355 : conf->bss = os_calloc(1, sizeof(struct hostapd_bss_config *));
135 1355 : if (conf->bss == NULL) {
136 4 : os_free(conf);
137 4 : os_free(bss);
138 4 : return NULL;
139 : }
140 1351 : conf->bss[0] = bss;
141 :
142 1351 : bss->radius = os_zalloc(sizeof(*bss->radius));
143 1351 : if (bss->radius == NULL) {
144 4 : os_free(conf->bss);
145 4 : os_free(conf);
146 4 : os_free(bss);
147 4 : return NULL;
148 : }
149 :
150 1347 : hostapd_config_defaults_bss(bss);
151 :
152 1347 : conf->num_bss = 1;
153 :
154 1347 : conf->beacon_int = 100;
155 1347 : conf->rts_threshold = -1; /* use driver default: 2347 */
156 1347 : conf->fragm_threshold = -1; /* user driver default: 2346 */
157 1347 : conf->send_probe_response = 1;
158 : /* Set to invalid value means do not add Power Constraint IE */
159 1347 : conf->local_pwr_constraint = -1;
160 :
161 1347 : conf->wmm_ac_params[0] = ac_be;
162 1347 : conf->wmm_ac_params[1] = ac_bk;
163 1347 : conf->wmm_ac_params[2] = ac_vi;
164 1347 : conf->wmm_ac_params[3] = ac_vo;
165 :
166 1347 : conf->tx_queue[0] = txq_vo;
167 1347 : conf->tx_queue[1] = txq_vi;
168 1347 : conf->tx_queue[2] = txq_be;
169 1347 : conf->tx_queue[3] = txq_bk;
170 :
171 1347 : conf->ht_capab = HT_CAP_INFO_SMPS_DISABLED;
172 :
173 1347 : conf->ap_table_max_size = 255;
174 1347 : conf->ap_table_expiration_time = 60;
175 :
176 : #ifdef CONFIG_TESTING_OPTIONS
177 1347 : conf->ignore_probe_probability = 0.0;
178 1347 : conf->ignore_auth_probability = 0.0;
179 1347 : conf->ignore_assoc_probability = 0.0;
180 1347 : conf->ignore_reassoc_probability = 0.0;
181 1347 : conf->corrupt_gtk_rekey_mic_probability = 0.0;
182 : #endif /* CONFIG_TESTING_OPTIONS */
183 :
184 : #ifdef CONFIG_ACS
185 1082 : conf->acs_num_scans = 5;
186 : #endif /* CONFIG_ACS */
187 :
188 1347 : return conf;
189 : }
190 :
191 :
192 67 : int hostapd_mac_comp(const void *a, const void *b)
193 : {
194 67 : return os_memcmp(a, b, sizeof(macaddr));
195 : }
196 :
197 :
198 3513 : int hostapd_mac_comp_empty(const void *a)
199 : {
200 3513 : macaddr empty = { 0 };
201 3513 : return os_memcmp(a, empty, sizeof(macaddr));
202 : }
203 :
204 :
205 19 : static int hostapd_config_read_wpa_psk(const char *fname,
206 : struct hostapd_ssid *ssid)
207 : {
208 : FILE *f;
209 : char buf[128], *pos;
210 19 : int line = 0, ret = 0, len, ok;
211 : u8 addr[ETH_ALEN];
212 : struct hostapd_wpa_psk *psk;
213 :
214 19 : if (!fname)
215 0 : return 0;
216 :
217 19 : f = fopen(fname, "r");
218 19 : if (!f) {
219 1 : wpa_printf(MSG_ERROR, "WPA PSK file '%s' not found.", fname);
220 1 : return -1;
221 : }
222 :
223 103 : while (fgets(buf, sizeof(buf), f)) {
224 70 : line++;
225 :
226 70 : if (buf[0] == '#')
227 2 : continue;
228 68 : pos = buf;
229 3116 : while (*pos != '\0') {
230 3048 : if (*pos == '\n') {
231 68 : *pos = '\0';
232 68 : break;
233 : }
234 2980 : pos++;
235 : }
236 68 : if (buf[0] == '\0')
237 1 : continue;
238 :
239 67 : if (hwaddr_aton(buf, addr)) {
240 1 : wpa_printf(MSG_ERROR, "Invalid MAC address '%s' on "
241 : "line %d in '%s'", buf, line, fname);
242 1 : ret = -1;
243 1 : break;
244 : }
245 :
246 66 : psk = os_zalloc(sizeof(*psk));
247 66 : if (psk == NULL) {
248 0 : wpa_printf(MSG_ERROR, "WPA PSK allocation failed");
249 0 : ret = -1;
250 0 : break;
251 : }
252 66 : if (is_zero_ether_addr(addr))
253 24 : psk->group = 1;
254 : else
255 42 : os_memcpy(psk->addr, addr, ETH_ALEN);
256 :
257 66 : pos = buf + 17;
258 66 : if (*pos == '\0') {
259 1 : wpa_printf(MSG_ERROR, "No PSK on line %d in '%s'",
260 : line, fname);
261 1 : os_free(psk);
262 1 : ret = -1;
263 1 : break;
264 : }
265 65 : pos++;
266 :
267 65 : ok = 0;
268 65 : len = os_strlen(pos);
269 65 : if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
270 13 : ok = 1;
271 52 : else if (len >= 8 && len < 64) {
272 51 : pbkdf2_sha1(pos, ssid->ssid, ssid->ssid_len,
273 51 : 4096, psk->psk, PMK_LEN);
274 51 : ok = 1;
275 : }
276 65 : if (!ok) {
277 1 : wpa_printf(MSG_ERROR, "Invalid PSK '%s' on line %d in "
278 : "'%s'", pos, line, fname);
279 1 : os_free(psk);
280 1 : ret = -1;
281 1 : break;
282 : }
283 :
284 64 : psk->next = ssid->wpa_psk;
285 64 : ssid->wpa_psk = psk;
286 : }
287 :
288 18 : fclose(f);
289 :
290 18 : return ret;
291 : }
292 :
293 :
294 242 : static int hostapd_derive_psk(struct hostapd_ssid *ssid)
295 : {
296 242 : ssid->wpa_psk = os_zalloc(sizeof(struct hostapd_wpa_psk));
297 242 : if (ssid->wpa_psk == NULL) {
298 0 : wpa_printf(MSG_ERROR, "Unable to alloc space for PSK");
299 0 : return -1;
300 : }
301 484 : wpa_hexdump_ascii(MSG_DEBUG, "SSID",
302 242 : (u8 *) ssid->ssid, ssid->ssid_len);
303 484 : wpa_hexdump_ascii_key(MSG_DEBUG, "PSK (ASCII passphrase)",
304 242 : (u8 *) ssid->wpa_passphrase,
305 242 : os_strlen(ssid->wpa_passphrase));
306 484 : pbkdf2_sha1(ssid->wpa_passphrase,
307 242 : ssid->ssid, ssid->ssid_len,
308 242 : 4096, ssid->wpa_psk->psk, PMK_LEN);
309 242 : wpa_hexdump_key(MSG_DEBUG, "PSK (from passphrase)",
310 242 : ssid->wpa_psk->psk, PMK_LEN);
311 242 : return 0;
312 : }
313 :
314 :
315 1270 : int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf)
316 : {
317 1270 : struct hostapd_ssid *ssid = &conf->ssid;
318 :
319 1270 : if (ssid->wpa_passphrase != NULL) {
320 243 : if (ssid->wpa_psk != NULL) {
321 1 : wpa_printf(MSG_DEBUG, "Using pre-configured WPA PSK "
322 : "instead of passphrase");
323 : } else {
324 242 : wpa_printf(MSG_DEBUG, "Deriving WPA PSK based on "
325 : "passphrase");
326 242 : if (hostapd_derive_psk(ssid) < 0)
327 0 : return -1;
328 : }
329 243 : ssid->wpa_psk->group = 1;
330 : }
331 :
332 1270 : if (ssid->wpa_psk_file) {
333 19 : if (hostapd_config_read_wpa_psk(ssid->wpa_psk_file,
334 : &conf->ssid))
335 4 : return -1;
336 : }
337 :
338 1266 : return 0;
339 : }
340 :
341 :
342 2714 : static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
343 : int num_servers)
344 : {
345 : int i;
346 :
347 3140 : for (i = 0; i < num_servers; i++) {
348 426 : os_free(servers[i].shared_secret);
349 : }
350 2714 : os_free(servers);
351 2714 : }
352 :
353 :
354 : struct hostapd_radius_attr *
355 41614 : hostapd_config_get_radius_attr(struct hostapd_radius_attr *attr, u8 type)
356 : {
357 41953 : for (; attr; attr = attr->next) {
358 354 : if (attr->type == type)
359 15 : return attr;
360 : }
361 41599 : return NULL;
362 : }
363 :
364 :
365 6549 : static void hostapd_config_free_radius_attr(struct hostapd_radius_attr *attr)
366 : {
367 : struct hostapd_radius_attr *prev;
368 :
369 13915 : while (attr) {
370 817 : prev = attr;
371 817 : attr = attr->next;
372 817 : wpabuf_free(prev->val);
373 817 : os_free(prev);
374 : }
375 6549 : }
376 :
377 :
378 3835 : void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
379 : {
380 3835 : hostapd_config_free_radius_attr(user->accept_attr);
381 3835 : os_free(user->identity);
382 3835 : bin_clear_free(user->password, user->password_len);
383 3835 : os_free(user);
384 3835 : }
385 :
386 :
387 1357 : static void hostapd_config_free_wep(struct hostapd_wep_keys *keys)
388 : {
389 : int i;
390 6785 : for (i = 0; i < NUM_WEP_KEYS; i++) {
391 5428 : bin_clear_free(keys->key[i], keys->len[i]);
392 5428 : keys->key[i] = NULL;
393 : }
394 1357 : }
395 :
396 :
397 1357 : void hostapd_config_free_bss(struct hostapd_bss_config *conf)
398 : {
399 : struct hostapd_wpa_psk *psk, *prev;
400 : struct hostapd_eap_user *user, *prev_user;
401 :
402 1357 : if (conf == NULL)
403 1357 : return;
404 :
405 1357 : psk = conf->ssid.wpa_psk;
406 3274 : while (psk) {
407 560 : prev = psk;
408 560 : psk = psk->next;
409 560 : bin_clear_free(prev, sizeof(*prev));
410 : }
411 :
412 1357 : str_clear_free(conf->ssid.wpa_passphrase);
413 1357 : os_free(conf->ssid.wpa_psk_file);
414 1357 : hostapd_config_free_wep(&conf->ssid.wep);
415 : #ifdef CONFIG_FULL_DYNAMIC_VLAN
416 1092 : os_free(conf->ssid.vlan_tagged_interface);
417 : #endif /* CONFIG_FULL_DYNAMIC_VLAN */
418 :
419 1357 : user = conf->eap_user;
420 6478 : while (user) {
421 3764 : prev_user = user;
422 3764 : user = user->next;
423 3764 : hostapd_config_free_eap_user(prev_user);
424 : }
425 1357 : os_free(conf->eap_user_sqlite);
426 :
427 1357 : os_free(conf->eap_req_id_text);
428 1357 : os_free(conf->erp_domain);
429 1357 : os_free(conf->accept_mac);
430 1357 : os_free(conf->deny_mac);
431 1357 : os_free(conf->nas_identifier);
432 1357 : if (conf->radius) {
433 1357 : hostapd_config_free_radius(conf->radius->auth_servers,
434 1357 : conf->radius->num_auth_servers);
435 1357 : hostapd_config_free_radius(conf->radius->acct_servers,
436 1357 : conf->radius->num_acct_servers);
437 : }
438 1357 : hostapd_config_free_radius_attr(conf->radius_auth_req_attr);
439 1357 : hostapd_config_free_radius_attr(conf->radius_acct_req_attr);
440 1357 : os_free(conf->rsn_preauth_interfaces);
441 1357 : os_free(conf->ctrl_interface);
442 1357 : os_free(conf->ca_cert);
443 1357 : os_free(conf->server_cert);
444 1357 : os_free(conf->private_key);
445 1357 : os_free(conf->private_key_passwd);
446 1357 : os_free(conf->ocsp_stapling_response);
447 1357 : os_free(conf->dh_file);
448 1357 : os_free(conf->openssl_ciphers);
449 1357 : os_free(conf->pac_opaque_encr_key);
450 1357 : os_free(conf->eap_fast_a_id);
451 1357 : os_free(conf->eap_fast_a_id_info);
452 1357 : os_free(conf->eap_sim_db);
453 1357 : os_free(conf->radius_server_clients);
454 1357 : os_free(conf->radius);
455 1357 : os_free(conf->radius_das_shared_secret);
456 1357 : hostapd_config_free_vlan(conf);
457 1357 : os_free(conf->time_zone);
458 :
459 : #ifdef CONFIG_IEEE80211R
460 : {
461 : struct ft_remote_r0kh *r0kh, *r0kh_prev;
462 : struct ft_remote_r1kh *r1kh, *r1kh_prev;
463 :
464 1357 : r0kh = conf->r0kh_list;
465 1357 : conf->r0kh_list = NULL;
466 2792 : while (r0kh) {
467 78 : r0kh_prev = r0kh;
468 78 : r0kh = r0kh->next;
469 78 : os_free(r0kh_prev);
470 : }
471 :
472 1357 : r1kh = conf->r1kh_list;
473 1357 : conf->r1kh_list = NULL;
474 2753 : while (r1kh) {
475 39 : r1kh_prev = r1kh;
476 39 : r1kh = r1kh->next;
477 39 : os_free(r1kh_prev);
478 : }
479 : }
480 : #endif /* CONFIG_IEEE80211R */
481 :
482 : #ifdef CONFIG_WPS
483 1357 : os_free(conf->wps_pin_requests);
484 1357 : os_free(conf->device_name);
485 1357 : os_free(conf->manufacturer);
486 1357 : os_free(conf->model_name);
487 1357 : os_free(conf->model_number);
488 1357 : os_free(conf->serial_number);
489 1357 : os_free(conf->config_methods);
490 1357 : os_free(conf->ap_pin);
491 1357 : os_free(conf->extra_cred);
492 1357 : os_free(conf->ap_settings);
493 1357 : os_free(conf->upnp_iface);
494 1357 : os_free(conf->friendly_name);
495 1357 : os_free(conf->manufacturer_url);
496 1357 : os_free(conf->model_description);
497 1357 : os_free(conf->model_url);
498 1357 : os_free(conf->upc);
499 : {
500 : unsigned int i;
501 :
502 14927 : for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
503 13570 : wpabuf_free(conf->wps_vendor_ext[i]);
504 : }
505 1357 : wpabuf_free(conf->wps_nfc_dh_pubkey);
506 1357 : wpabuf_free(conf->wps_nfc_dh_privkey);
507 1357 : wpabuf_free(conf->wps_nfc_dev_pw);
508 : #endif /* CONFIG_WPS */
509 :
510 1357 : os_free(conf->roaming_consortium);
511 1357 : os_free(conf->venue_name);
512 1357 : os_free(conf->nai_realm_data);
513 1357 : os_free(conf->network_auth_type);
514 1357 : os_free(conf->anqp_3gpp_cell_net);
515 1357 : os_free(conf->domain_name);
516 :
517 : #ifdef CONFIG_RADIUS_TEST
518 : os_free(conf->dump_msk_file);
519 : #endif /* CONFIG_RADIUS_TEST */
520 :
521 : #ifdef CONFIG_HS20
522 1357 : os_free(conf->hs20_oper_friendly_name);
523 1357 : os_free(conf->hs20_wan_metrics);
524 1357 : os_free(conf->hs20_connection_capability);
525 1357 : os_free(conf->hs20_operating_class);
526 1357 : os_free(conf->hs20_icons);
527 1357 : if (conf->hs20_osu_providers) {
528 : size_t i;
529 8 : for (i = 0; i < conf->hs20_osu_providers_count; i++) {
530 : struct hs20_osu_provider *p;
531 : size_t j;
532 4 : p = &conf->hs20_osu_providers[i];
533 4 : os_free(p->friendly_name);
534 4 : os_free(p->server_uri);
535 4 : os_free(p->method_list);
536 7 : for (j = 0; j < p->icons_count; j++)
537 3 : os_free(p->icons[j]);
538 4 : os_free(p->icons);
539 4 : os_free(p->osu_nai);
540 4 : os_free(p->service_desc);
541 : }
542 4 : os_free(conf->hs20_osu_providers);
543 : }
544 1357 : os_free(conf->subscr_remediation_url);
545 : #endif /* CONFIG_HS20 */
546 :
547 1357 : wpabuf_free(conf->vendor_elements);
548 :
549 1357 : os_free(conf->sae_groups);
550 :
551 1357 : os_free(conf->wowlan_triggers);
552 :
553 1357 : os_free(conf->server_id);
554 :
555 1357 : os_free(conf);
556 : }
557 :
558 :
559 : /**
560 : * hostapd_config_free - Free hostapd configuration
561 : * @conf: Configuration data from hostapd_config_read().
562 : */
563 1374 : void hostapd_config_free(struct hostapd_config *conf)
564 : {
565 : size_t i;
566 :
567 1374 : if (conf == NULL)
568 1401 : return;
569 :
570 2665 : for (i = 0; i < conf->num_bss; i++)
571 1318 : hostapd_config_free_bss(conf->bss[i]);
572 1347 : os_free(conf->bss);
573 1347 : os_free(conf->supported_rates);
574 1347 : os_free(conf->basic_rates);
575 1347 : os_free(conf->chanlist);
576 1347 : os_free(conf->driver_params);
577 :
578 1347 : os_free(conf);
579 : }
580 :
581 :
582 : /**
583 : * hostapd_maclist_found - Find a MAC address from a list
584 : * @list: MAC address list
585 : * @num_entries: Number of addresses in the list
586 : * @addr: Address to search for
587 : * @vlan_id: Buffer for returning VLAN ID or %NULL if not needed
588 : * Returns: 1 if address is in the list or 0 if not.
589 : *
590 : * Perform a binary search for given MAC address from a pre-sorted list.
591 : */
592 5000 : int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
593 : const u8 *addr, int *vlan_id)
594 : {
595 : int start, end, middle, res;
596 :
597 5000 : start = 0;
598 5000 : end = num_entries - 1;
599 :
600 10020 : while (start <= end) {
601 137 : middle = (start + end) / 2;
602 137 : res = os_memcmp(list[middle].addr, addr, ETH_ALEN);
603 137 : if (res == 0) {
604 117 : if (vlan_id)
605 117 : *vlan_id = list[middle].vlan_id;
606 117 : return 1;
607 : }
608 20 : if (res < 0)
609 20 : start = middle + 1;
610 : else
611 0 : end = middle - 1;
612 : }
613 :
614 4883 : return 0;
615 : }
616 :
617 :
618 15964 : int hostapd_rate_found(int *list, int rate)
619 : {
620 : int i;
621 :
622 15964 : if (list == NULL)
623 0 : return 0;
624 :
625 69895 : for (i = 0; list[i] >= 0; i++)
626 60307 : if (list[i] == rate)
627 6376 : return 1;
628 :
629 9588 : return 0;
630 : }
631 :
632 :
633 13 : int hostapd_vlan_id_valid(struct hostapd_vlan *vlan, int vlan_id)
634 : {
635 13 : struct hostapd_vlan *v = vlan;
636 31 : while (v) {
637 18 : if (v->vlan_id == vlan_id || v->vlan_id == VLAN_ID_WILDCARD)
638 13 : return 1;
639 5 : v = v->next;
640 : }
641 0 : return 0;
642 : }
643 :
644 :
645 10 : const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan, int vlan_id)
646 : {
647 10 : struct hostapd_vlan *v = vlan;
648 20 : while (v) {
649 10 : if (v->vlan_id == vlan_id)
650 10 : return v->ifname;
651 0 : v = v->next;
652 : }
653 0 : return NULL;
654 : }
655 :
656 :
657 1939 : const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
658 : const u8 *addr, const u8 *p2p_dev_addr,
659 : const u8 *prev_psk)
660 : {
661 : struct hostapd_wpa_psk *psk;
662 1939 : int next_ok = prev_psk == NULL;
663 :
664 1939 : if (p2p_dev_addr && !is_zero_ether_addr(p2p_dev_addr)) {
665 7116 : wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
666 : " p2p_dev_addr=" MACSTR " prev_psk=%p",
667 7116 : MAC2STR(addr), MAC2STR(p2p_dev_addr), prev_psk);
668 593 : addr = NULL; /* Use P2P Device Address for matching */
669 : } else {
670 8076 : wpa_printf(MSG_DEBUG, "Searching a PSK for " MACSTR
671 : " prev_psk=%p",
672 8076 : MAC2STR(addr), prev_psk);
673 : }
674 :
675 1984 : for (psk = conf->ssid.wpa_psk; psk != NULL; psk = psk->next) {
676 3901 : if (next_ok &&
677 2030 : (psk->group ||
678 42 : (addr && os_memcmp(psk->addr, addr, ETH_ALEN) == 0) ||
679 96 : (!addr && p2p_dev_addr &&
680 48 : os_memcmp(psk->p2p_dev_addr, p2p_dev_addr, ETH_ALEN) ==
681 : 0)))
682 1916 : return psk->psk;
683 :
684 45 : if (psk->psk == prev_psk)
685 17 : next_ok = 1;
686 : }
687 :
688 23 : return NULL;
689 : }
690 :
691 :
692 16864 : static int hostapd_config_check_bss(struct hostapd_bss_config *bss,
693 : struct hostapd_config *conf,
694 : int full_config)
695 : {
696 17218 : if (full_config && bss->ieee802_1x && !bss->eap_server &&
697 354 : !bss->radius->auth_servers) {
698 1 : wpa_printf(MSG_ERROR, "Invalid IEEE 802.1X configuration (no "
699 : "EAP authenticator configured).");
700 1 : return -1;
701 : }
702 :
703 16863 : if (bss->wpa) {
704 : int wep, i;
705 :
706 15468 : wep = bss->default_wep_key_len > 0 ||
707 7734 : bss->individual_wep_key_len > 0;
708 38666 : for (i = 0; i < NUM_WEP_KEYS; i++) {
709 30933 : if (bss->ssid.wep.keys_set) {
710 1 : wep = 1;
711 1 : break;
712 : }
713 : }
714 :
715 7734 : if (wep) {
716 1 : wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
717 1 : return -1;
718 : }
719 : }
720 :
721 17503 : if (full_config && bss->wpa &&
722 643 : bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
723 2 : bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
724 1 : wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
725 : "RADIUS checking (macaddr_acl=2) enabled.");
726 1 : return -1;
727 : }
728 :
729 17060 : if (full_config && bss->wpa && (bss->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
730 395 : bss->ssid.wpa_psk == NULL && bss->ssid.wpa_passphrase == NULL &&
731 10 : bss->ssid.wpa_psk_file == NULL &&
732 2 : (bss->wpa_psk_radius != PSK_RADIUS_REQUIRED ||
733 1 : bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH)) {
734 0 : wpa_printf(MSG_ERROR, "WPA-PSK enabled, but PSK or passphrase "
735 : "is not configured.");
736 0 : return -1;
737 : }
738 :
739 16861 : if (full_config && hostapd_mac_comp_empty(bss->bssid) != 0) {
740 : size_t i;
741 :
742 220 : for (i = 0; i < conf->num_bss; i++) {
743 149 : if (conf->bss[i] != bss &&
744 26 : (hostapd_mac_comp(conf->bss[i]->bssid,
745 26 : bss->bssid) == 0)) {
746 0 : wpa_printf(MSG_ERROR, "Duplicate BSSID " MACSTR
747 : " on interface '%s' and '%s'.",
748 0 : MAC2STR(bss->bssid),
749 0 : conf->bss[i]->iface, bss->iface);
750 0 : return -1;
751 : }
752 : }
753 : }
754 :
755 : #ifdef CONFIG_IEEE80211R
756 16903 : if (full_config && wpa_key_mgmt_ft(bss->wpa_key_mgmt) &&
757 83 : (bss->nas_identifier == NULL ||
758 82 : os_strlen(bss->nas_identifier) < 1 ||
759 41 : os_strlen(bss->nas_identifier) > FT_R0KH_ID_MAX_LEN)) {
760 1 : wpa_printf(MSG_ERROR, "FT (IEEE 802.11r) requires "
761 : "nas_identifier to be configured as a 1..48 octet "
762 : "string");
763 1 : return -1;
764 : }
765 : #endif /* CONFIG_IEEE80211R */
766 :
767 : #ifdef CONFIG_IEEE80211N
768 17882 : if (full_config && conf->ieee80211n &&
769 1022 : conf->hw_mode == HOSTAPD_MODE_IEEE80211B) {
770 3 : bss->disable_11n = 1;
771 3 : wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) in 11b mode is not "
772 : "allowed, disabling HT capabilities");
773 : }
774 :
775 17882 : if (full_config && conf->ieee80211n &&
776 1022 : bss->ssid.security_policy == SECURITY_STATIC_WEP) {
777 13 : bss->disable_11n = 1;
778 13 : wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WEP is not "
779 : "allowed, disabling HT capabilities");
780 : }
781 :
782 17499 : if (full_config && conf->ieee80211n && bss->wpa &&
783 1276 : !(bss->wpa_pairwise & WPA_CIPHER_CCMP) &&
784 637 : !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
785 : WPA_CIPHER_CCMP_256 | WPA_CIPHER_GCMP_256)))
786 : {
787 12 : bss->disable_11n = 1;
788 12 : wpa_printf(MSG_ERROR, "HT (IEEE 802.11n) with WPA/WPA2 "
789 : "requires CCMP/GCMP to be enabled, disabling HT "
790 : "capabilities");
791 : }
792 : #endif /* CONFIG_IEEE80211N */
793 :
794 : #ifdef CONFIG_WPS
795 16860 : if (full_config && bss->wps_state && bss->ignore_broadcast_ssid) {
796 0 : wpa_printf(MSG_INFO, "WPS: ignore_broadcast_ssid "
797 : "configuration forced WPS to be disabled");
798 0 : bss->wps_state = 0;
799 : }
800 :
801 16946 : if (full_config && bss->wps_state &&
802 86 : bss->ssid.wep.keys_set && bss->wpa == 0) {
803 0 : wpa_printf(MSG_INFO, "WPS: WEP configuration forced WPS to be "
804 : "disabled");
805 0 : bss->wps_state = 0;
806 : }
807 :
808 16922 : if (full_config && bss->wps_state && bss->wpa &&
809 124 : (!(bss->wpa & 2) ||
810 62 : !(bss->rsn_pairwise & WPA_CIPHER_CCMP))) {
811 0 : wpa_printf(MSG_INFO, "WPS: WPA/TKIP configuration without "
812 : "WPA2/CCMP forced WPS to be disabled");
813 0 : bss->wps_state = 0;
814 : }
815 : #endif /* CONFIG_WPS */
816 :
817 : #ifdef CONFIG_HS20
818 16982 : if (full_config && bss->hs20 &&
819 243 : (!(bss->wpa & 2) ||
820 121 : !(bss->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP |
821 : WPA_CIPHER_CCMP_256 |
822 : WPA_CIPHER_GCMP_256)))) {
823 1 : wpa_printf(MSG_ERROR, "HS 2.0: WPA2-Enterprise/CCMP "
824 : "configuration is required for Hotspot 2.0 "
825 : "functionality");
826 1 : return -1;
827 : }
828 : #endif /* CONFIG_HS20 */
829 :
830 16859 : return 0;
831 : }
832 :
833 :
834 16843 : int hostapd_config_check(struct hostapd_config *conf, int full_config)
835 : {
836 : size_t i;
837 :
838 16859 : if (full_config && conf->ieee80211d &&
839 31 : (!conf->country[0] || !conf->country[1])) {
840 1 : wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11d without "
841 : "setting the country_code");
842 1 : return -1;
843 : }
844 :
845 16842 : if (full_config && conf->ieee80211h && !conf->ieee80211d) {
846 1 : wpa_printf(MSG_ERROR, "Cannot enable IEEE 802.11h without "
847 : "IEEE 802.11d enabled");
848 1 : return -1;
849 : }
850 :
851 16843 : if (full_config && conf->local_pwr_constraint != -1 &&
852 2 : !conf->ieee80211d) {
853 1 : wpa_printf(MSG_ERROR, "Cannot add Power Constraint element without Country element");
854 1 : return -1;
855 : }
856 :
857 16842 : if (full_config && conf->spectrum_mgmt_required &&
858 2 : conf->local_pwr_constraint == -1) {
859 1 : wpa_printf(MSG_ERROR, "Cannot set Spectrum Management bit without Country and Power Constraint elements");
860 1 : return -1;
861 : }
862 :
863 33698 : for (i = 0; i < conf->num_bss; i++) {
864 16864 : if (hostapd_config_check_bss(conf->bss[i], conf, full_config))
865 5 : return -1;
866 : }
867 :
868 16834 : return 0;
869 : }
870 :
871 :
872 16864 : void hostapd_set_security_params(struct hostapd_bss_config *bss,
873 : int full_config)
874 : {
875 16864 : if (bss->individual_wep_key_len == 0) {
876 : /* individual keys are not use; can use key idx0 for
877 : * broadcast keys */
878 16858 : bss->broadcast_key_idx_min = 0;
879 : }
880 :
881 16864 : if ((bss->wpa & 2) && bss->rsn_pairwise == 0)
882 1 : bss->rsn_pairwise = bss->wpa_pairwise;
883 16864 : bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa, bss->wpa_pairwise,
884 : bss->rsn_pairwise);
885 :
886 16864 : if (full_config) {
887 1039 : bss->radius->auth_server = bss->radius->auth_servers;
888 1039 : bss->radius->acct_server = bss->radius->acct_servers;
889 : }
890 :
891 16864 : if (bss->wpa && bss->ieee802_1x) {
892 2707 : bss->ssid.security_policy = SECURITY_WPA;
893 14157 : } else if (bss->wpa) {
894 5027 : bss->ssid.security_policy = SECURITY_WPA_PSK;
895 9130 : } else if (bss->ieee802_1x) {
896 31 : int cipher = WPA_CIPHER_NONE;
897 31 : bss->ssid.security_policy = SECURITY_IEEE_802_1X;
898 31 : bss->ssid.wep.default_len = bss->default_wep_key_len;
899 31 : if (full_config && bss->default_wep_key_len) {
900 4 : cipher = bss->default_wep_key_len >= 13 ?
901 2 : WPA_CIPHER_WEP104 : WPA_CIPHER_WEP40;
902 29 : } else if (full_config && bss->ssid.wep.keys_set) {
903 1 : if (bss->ssid.wep.len[0] >= 13)
904 0 : cipher = WPA_CIPHER_WEP104;
905 : else
906 1 : cipher = WPA_CIPHER_WEP40;
907 : }
908 31 : bss->wpa_group = cipher;
909 31 : bss->wpa_pairwise = cipher;
910 31 : bss->rsn_pairwise = cipher;
911 31 : if (full_config)
912 7 : bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
913 9099 : } else if (bss->ssid.wep.keys_set) {
914 28 : int cipher = WPA_CIPHER_WEP40;
915 28 : if (bss->ssid.wep.len[0] >= 13)
916 12 : cipher = WPA_CIPHER_WEP104;
917 28 : bss->ssid.security_policy = SECURITY_STATIC_WEP;
918 28 : bss->wpa_group = cipher;
919 28 : bss->wpa_pairwise = cipher;
920 28 : bss->rsn_pairwise = cipher;
921 28 : if (full_config)
922 13 : bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
923 9071 : } else if (bss->osen) {
924 2 : bss->ssid.security_policy = SECURITY_OSEN;
925 2 : bss->wpa_group = WPA_CIPHER_CCMP;
926 2 : bss->wpa_pairwise = 0;
927 2 : bss->rsn_pairwise = WPA_CIPHER_CCMP;
928 : } else {
929 9069 : bss->ssid.security_policy = SECURITY_PLAINTEXT;
930 9069 : bss->wpa_group = WPA_CIPHER_NONE;
931 9069 : bss->wpa_pairwise = WPA_CIPHER_NONE;
932 9069 : bss->rsn_pairwise = WPA_CIPHER_NONE;
933 9069 : if (full_config)
934 377 : bss->wpa_key_mgmt = WPA_KEY_MGMT_NONE;
935 : }
936 16864 : }
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