Line data Source code
1 : /*
2 : * hostapd / IEEE 802.11 Management: Beacon and Probe Request/Response
3 : * Copyright (c) 2002-2004, Instant802 Networks, Inc.
4 : * Copyright (c) 2005-2006, Devicescape Software, Inc.
5 : * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
6 : *
7 : * This software may be distributed under the terms of the BSD license.
8 : * See README for more details.
9 : */
10 :
11 : #include "utils/includes.h"
12 :
13 : #ifndef CONFIG_NATIVE_WINDOWS
14 :
15 : #include "utils/common.h"
16 : #include "common/ieee802_11_defs.h"
17 : #include "common/ieee802_11_common.h"
18 : #include "common/hw_features_common.h"
19 : #include "wps/wps_defs.h"
20 : #include "p2p/p2p.h"
21 : #include "hostapd.h"
22 : #include "ieee802_11.h"
23 : #include "wpa_auth.h"
24 : #include "wmm.h"
25 : #include "ap_config.h"
26 : #include "sta_info.h"
27 : #include "p2p_hostapd.h"
28 : #include "ap_drv_ops.h"
29 : #include "beacon.h"
30 : #include "hs20.h"
31 : #include "dfs.h"
32 :
33 :
34 : #ifdef NEED_AP_MLME
35 :
36 8552 : static u8 * hostapd_eid_rm_enabled_capab(struct hostapd_data *hapd, u8 *eid,
37 : size_t len)
38 : {
39 8552 : if (!hapd->conf->radio_measurements || len < 2 + 4)
40 8550 : return eid;
41 :
42 2 : *eid++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
43 2 : *eid++ = 5;
44 2 : *eid++ = (hapd->conf->radio_measurements & BIT(0)) ?
45 : WLAN_RRM_CAPS_NEIGHBOR_REPORT : 0x00;
46 2 : *eid++ = 0x00;
47 2 : *eid++ = 0x00;
48 2 : *eid++ = 0x00;
49 2 : *eid++ = 0x00;
50 2 : return eid;
51 : }
52 :
53 :
54 8552 : static u8 * hostapd_eid_bss_load(struct hostapd_data *hapd, u8 *eid, size_t len)
55 : {
56 8552 : if (len < 2 + 5)
57 0 : return eid;
58 :
59 : #ifdef CONFIG_TESTING_OPTIONS
60 8552 : if (hapd->conf->bss_load_test_set) {
61 11 : *eid++ = WLAN_EID_BSS_LOAD;
62 11 : *eid++ = 5;
63 11 : os_memcpy(eid, hapd->conf->bss_load_test, 5);
64 11 : eid += 5;
65 11 : return eid;
66 : }
67 : #endif /* CONFIG_TESTING_OPTIONS */
68 8541 : if (hapd->conf->bss_load_update_period) {
69 7 : *eid++ = WLAN_EID_BSS_LOAD;
70 7 : *eid++ = 5;
71 7 : WPA_PUT_LE16(eid, hapd->num_sta);
72 7 : eid += 2;
73 7 : *eid++ = hapd->iface->channel_utilization;
74 7 : WPA_PUT_LE16(eid, 0); /* no available admission capabity */
75 7 : eid += 2;
76 : }
77 8541 : return eid;
78 : }
79 :
80 :
81 12256 : static u8 ieee802_11_erp_info(struct hostapd_data *hapd)
82 : {
83 12256 : u8 erp = 0;
84 :
85 24500 : if (hapd->iface->current_mode == NULL ||
86 12244 : hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
87 577 : return 0;
88 :
89 11679 : if (hapd->iface->olbc)
90 2 : erp |= ERP_INFO_USE_PROTECTION;
91 11679 : if (hapd->iface->num_sta_non_erp > 0) {
92 0 : erp |= ERP_INFO_NON_ERP_PRESENT |
93 : ERP_INFO_USE_PROTECTION;
94 : }
95 23358 : if (hapd->iface->num_sta_no_short_preamble > 0 ||
96 11679 : hapd->iconf->preamble == LONG_PREAMBLE)
97 11676 : erp |= ERP_INFO_BARKER_PREAMBLE_MODE;
98 :
99 11679 : return erp;
100 : }
101 :
102 :
103 8552 : static u8 * hostapd_eid_ds_params(struct hostapd_data *hapd, u8 *eid)
104 : {
105 8552 : *eid++ = WLAN_EID_DS_PARAMS;
106 8552 : *eid++ = 1;
107 8552 : *eid++ = hapd->iconf->channel;
108 8552 : return eid;
109 : }
110 :
111 :
112 8552 : static u8 * hostapd_eid_erp_info(struct hostapd_data *hapd, u8 *eid)
113 : {
114 17092 : if (hapd->iface->current_mode == NULL ||
115 8540 : hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211G)
116 796 : return eid;
117 :
118 : /* Set NonERP_present and use_protection bits if there
119 : * are any associated NonERP stations. */
120 : /* TODO: use_protection bit can be set to zero even if
121 : * there are NonERP stations present. This optimization
122 : * might be useful if NonERP stations are "quiet".
123 : * See 802.11g/D6 E-1 for recommended practice.
124 : * In addition, Non ERP present might be set, if AP detects Non ERP
125 : * operation on other APs. */
126 :
127 : /* Add ERP Information element */
128 7756 : *eid++ = WLAN_EID_ERP_INFO;
129 7756 : *eid++ = 1;
130 7756 : *eid++ = ieee802_11_erp_info(hapd);
131 :
132 7756 : return eid;
133 : }
134 :
135 :
136 8552 : static u8 * hostapd_eid_pwr_constraint(struct hostapd_data *hapd, u8 *eid)
137 : {
138 8552 : u8 *pos = eid;
139 8552 : u8 local_pwr_constraint = 0;
140 : int dfs;
141 :
142 17092 : if (hapd->iface->current_mode == NULL ||
143 8540 : hapd->iface->current_mode->mode != HOSTAPD_MODE_IEEE80211A)
144 7792 : return eid;
145 :
146 : /* Let host drivers add this IE if DFS support is offloaded */
147 760 : if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)
148 0 : return eid;
149 :
150 : /*
151 : * There is no DFS support and power constraint was not directly
152 : * requested by config option.
153 : */
154 1490 : if (!hapd->iconf->ieee80211h &&
155 730 : hapd->iconf->local_pwr_constraint == -1)
156 728 : return eid;
157 :
158 : /* Check if DFS is required by regulatory. */
159 32 : dfs = hostapd_is_dfs_required(hapd->iface);
160 32 : if (dfs < 0) {
161 0 : wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
162 : dfs);
163 0 : dfs = 0;
164 : }
165 :
166 32 : if (dfs == 0 && hapd->iconf->local_pwr_constraint == -1)
167 14 : return eid;
168 :
169 : /*
170 : * ieee80211h (DFS) is enabled so Power Constraint element shall
171 : * be added when running on DFS channel whenever local_pwr_constraint
172 : * is configured or not. In order to meet regulations when TPC is not
173 : * implemented using a transmit power that is below the legal maximum
174 : * (including any mitigation factor) should help. In this case,
175 : * indicate 3 dB below maximum allowed transmit power.
176 : */
177 18 : if (hapd->iconf->local_pwr_constraint == -1)
178 16 : local_pwr_constraint = 3;
179 :
180 : /*
181 : * A STA that is not an AP shall use a transmit power less than or
182 : * equal to the local maximum transmit power level for the channel.
183 : * The local maximum transmit power can be calculated from the formula:
184 : * local max TX pwr = max TX pwr - local pwr constraint
185 : * Where max TX pwr is maximum transmit power level specified for
186 : * channel in Country element and local pwr constraint is specified
187 : * for channel in this Power Constraint element.
188 : */
189 :
190 : /* Element ID */
191 18 : *pos++ = WLAN_EID_PWR_CONSTRAINT;
192 : /* Length */
193 18 : *pos++ = 1;
194 : /* Local Power Constraint */
195 18 : if (local_pwr_constraint)
196 16 : *pos++ = local_pwr_constraint;
197 : else
198 2 : *pos++ = hapd->iconf->local_pwr_constraint;
199 :
200 18 : return pos;
201 : }
202 :
203 :
204 105 : static u8 * hostapd_eid_country_add(u8 *pos, u8 *end, int chan_spacing,
205 : struct hostapd_channel_data *start,
206 : struct hostapd_channel_data *prev)
207 : {
208 105 : if (end - pos < 3)
209 0 : return pos;
210 :
211 : /* first channel number */
212 105 : *pos++ = start->chan;
213 : /* number of channels */
214 105 : *pos++ = (prev->chan - start->chan) / chan_spacing + 1;
215 : /* maximum transmit power level */
216 105 : *pos++ = start->max_tx_power;
217 :
218 105 : return pos;
219 : }
220 :
221 :
222 8552 : static u8 * hostapd_eid_country(struct hostapd_data *hapd, u8 *eid,
223 : int max_len)
224 : {
225 8552 : u8 *pos = eid;
226 8552 : u8 *end = eid + max_len;
227 : int i;
228 : struct hostapd_hw_modes *mode;
229 : struct hostapd_channel_data *start, *prev;
230 8552 : int chan_spacing = 1;
231 :
232 8623 : if (!hapd->iconf->ieee80211d || max_len < 6 ||
233 71 : hapd->iface->current_mode == NULL)
234 8481 : return eid;
235 :
236 71 : *pos++ = WLAN_EID_COUNTRY;
237 71 : pos++; /* length will be set later */
238 71 : os_memcpy(pos, hapd->iconf->country, 3); /* e.g., 'US ' */
239 71 : pos += 3;
240 :
241 71 : mode = hapd->iface->current_mode;
242 71 : if (mode->mode == HOSTAPD_MODE_IEEE80211A)
243 36 : chan_spacing = 4;
244 :
245 71 : start = prev = NULL;
246 1425 : for (i = 0; i < mode->num_channels; i++) {
247 1354 : struct hostapd_channel_data *chan = &mode->channels[i];
248 1354 : if (chan->flag & HOSTAPD_CHAN_DISABLED)
249 354 : continue;
250 1929 : if (start && prev &&
251 1828 : prev->chan + chan_spacing == chan->chan &&
252 899 : start->max_tx_power == chan->max_tx_power) {
253 895 : prev = chan;
254 895 : continue; /* can use same entry */
255 : }
256 :
257 105 : if (start && prev) {
258 34 : pos = hostapd_eid_country_add(pos, end, chan_spacing,
259 : start, prev);
260 34 : start = NULL;
261 : }
262 :
263 : /* Start new group */
264 105 : start = prev = chan;
265 : }
266 :
267 71 : if (start) {
268 71 : pos = hostapd_eid_country_add(pos, end, chan_spacing,
269 : start, prev);
270 : }
271 :
272 71 : if ((pos - eid) & 1) {
273 26 : if (end - pos < 1)
274 0 : return eid;
275 26 : *pos++ = 0; /* pad for 16-bit alignment */
276 : }
277 :
278 71 : eid[1] = (pos - eid) - 2;
279 :
280 71 : return pos;
281 : }
282 :
283 :
284 8552 : static u8 * hostapd_eid_wpa(struct hostapd_data *hapd, u8 *eid, size_t len)
285 : {
286 : const u8 *ie;
287 : size_t ielen;
288 :
289 8552 : ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &ielen);
290 8552 : if (ie == NULL || ielen > len)
291 2662 : return eid;
292 :
293 5890 : os_memcpy(eid, ie, ielen);
294 5890 : return eid + ielen;
295 : }
296 :
297 :
298 8552 : static u8 * hostapd_eid_csa(struct hostapd_data *hapd, u8 *eid)
299 : {
300 : u8 chan;
301 :
302 8552 : if (!hapd->cs_freq_params.freq)
303 8529 : return eid;
304 :
305 23 : if (ieee80211_freq_to_chan(hapd->cs_freq_params.freq, &chan) ==
306 : NUM_HOSTAPD_MODES)
307 0 : return eid;
308 :
309 23 : *eid++ = WLAN_EID_CHANNEL_SWITCH;
310 23 : *eid++ = 3;
311 23 : *eid++ = hapd->cs_block_tx;
312 23 : *eid++ = chan;
313 23 : *eid++ = hapd->cs_count;
314 :
315 23 : return eid;
316 : }
317 :
318 :
319 23 : static u8 * hostapd_eid_secondary_channel(struct hostapd_data *hapd, u8 *eid)
320 : {
321 : u8 sec_ch;
322 :
323 23 : if (!hapd->cs_freq_params.sec_channel_offset)
324 14 : return eid;
325 :
326 9 : if (hapd->cs_freq_params.sec_channel_offset == -1)
327 2 : sec_ch = HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW;
328 7 : else if (hapd->cs_freq_params.sec_channel_offset == 1)
329 6 : sec_ch = HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE;
330 : else
331 1 : return eid;
332 :
333 8 : *eid++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET;
334 8 : *eid++ = 1;
335 8 : *eid++ = sec_ch;
336 :
337 8 : return eid;
338 : }
339 :
340 :
341 8552 : static u8 * hostapd_add_csa_elems(struct hostapd_data *hapd, u8 *pos,
342 : u8 *start, unsigned int *csa_counter_off)
343 : {
344 8552 : u8 *old_pos = pos;
345 :
346 8552 : if (!csa_counter_off)
347 0 : return pos;
348 :
349 8552 : *csa_counter_off = 0;
350 8552 : pos = hostapd_eid_csa(hapd, pos);
351 :
352 8552 : if (pos != old_pos) {
353 : /* save an offset to the counter - should be last byte */
354 23 : *csa_counter_off = pos - start - 1;
355 23 : pos = hostapd_eid_secondary_channel(hapd, pos);
356 : }
357 :
358 8552 : return pos;
359 : }
360 :
361 :
362 4052 : static u8 * hostapd_gen_probe_resp(struct hostapd_data *hapd,
363 : const struct ieee80211_mgmt *req,
364 : int is_p2p, size_t *resp_len)
365 : {
366 : struct ieee80211_mgmt *resp;
367 : u8 *pos, *epos;
368 : size_t buflen;
369 :
370 : #define MAX_PROBERESP_LEN 768
371 4052 : buflen = MAX_PROBERESP_LEN;
372 : #ifdef CONFIG_WPS
373 4052 : if (hapd->wps_probe_resp_ie)
374 1739 : buflen += wpabuf_len(hapd->wps_probe_resp_ie);
375 : #endif /* CONFIG_WPS */
376 : #ifdef CONFIG_P2P
377 437 : if (hapd->p2p_probe_resp_ie)
378 407 : buflen += wpabuf_len(hapd->p2p_probe_resp_ie);
379 : #endif /* CONFIG_P2P */
380 : #ifdef CONFIG_FST
381 4052 : if (hapd->iface->fst_ies)
382 265 : buflen += wpabuf_len(hapd->iface->fst_ies);
383 : #endif /* CONFIG_FST */
384 4052 : if (hapd->conf->vendor_elements)
385 10 : buflen += wpabuf_len(hapd->conf->vendor_elements);
386 4052 : if (hapd->conf->vendor_vht) {
387 2 : buflen += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
388 : 2 + sizeof(struct ieee80211_vht_operation);
389 : }
390 4052 : resp = os_zalloc(buflen);
391 4052 : if (resp == NULL)
392 0 : return NULL;
393 :
394 4052 : epos = ((u8 *) resp) + MAX_PROBERESP_LEN;
395 :
396 4052 : resp->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
397 : WLAN_FC_STYPE_PROBE_RESP);
398 4052 : if (req)
399 4052 : os_memcpy(resp->da, req->sa, ETH_ALEN);
400 4052 : os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
401 :
402 4052 : os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
403 4052 : resp->u.probe_resp.beacon_int =
404 4052 : host_to_le16(hapd->iconf->beacon_int);
405 :
406 : /* hardware or low-level driver will setup seq_ctrl and timestamp */
407 4052 : resp->u.probe_resp.capab_info =
408 4052 : host_to_le16(hostapd_own_capab_info(hapd));
409 :
410 4052 : pos = resp->u.probe_resp.variable;
411 4052 : *pos++ = WLAN_EID_SSID;
412 4052 : *pos++ = hapd->conf->ssid.ssid_len;
413 4052 : os_memcpy(pos, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len);
414 4052 : pos += hapd->conf->ssid.ssid_len;
415 :
416 : /* Supported rates */
417 4052 : pos = hostapd_eid_supp_rates(hapd, pos);
418 :
419 : /* DS Params */
420 4052 : pos = hostapd_eid_ds_params(hapd, pos);
421 :
422 4052 : pos = hostapd_eid_country(hapd, pos, epos - pos);
423 :
424 : /* Power Constraint element */
425 4052 : pos = hostapd_eid_pwr_constraint(hapd, pos);
426 :
427 : /* ERP Information element */
428 4052 : pos = hostapd_eid_erp_info(hapd, pos);
429 :
430 : /* Extended supported rates */
431 4052 : pos = hostapd_eid_ext_supp_rates(hapd, pos);
432 :
433 : /* RSN, MDIE, WPA */
434 4052 : pos = hostapd_eid_wpa(hapd, pos, epos - pos);
435 :
436 4052 : pos = hostapd_eid_bss_load(hapd, pos, epos - pos);
437 :
438 4052 : pos = hostapd_eid_rm_enabled_capab(hapd, pos, epos - pos);
439 :
440 : #ifdef CONFIG_IEEE80211N
441 4052 : pos = hostapd_eid_ht_capabilities(hapd, pos);
442 4052 : pos = hostapd_eid_ht_operation(hapd, pos);
443 : #endif /* CONFIG_IEEE80211N */
444 :
445 4052 : pos = hostapd_eid_ext_capab(hapd, pos);
446 :
447 4052 : pos = hostapd_eid_time_adv(hapd, pos);
448 4052 : pos = hostapd_eid_time_zone(hapd, pos);
449 :
450 4052 : pos = hostapd_eid_interworking(hapd, pos);
451 4052 : pos = hostapd_eid_adv_proto(hapd, pos);
452 4052 : pos = hostapd_eid_roaming_consortium(hapd, pos);
453 :
454 4052 : pos = hostapd_add_csa_elems(hapd, pos, (u8 *)resp,
455 : &hapd->cs_c_off_proberesp);
456 :
457 : #ifdef CONFIG_FST
458 4052 : if (hapd->iface->fst_ies) {
459 265 : os_memcpy(pos, wpabuf_head(hapd->iface->fst_ies),
460 : wpabuf_len(hapd->iface->fst_ies));
461 265 : pos += wpabuf_len(hapd->iface->fst_ies);
462 : }
463 : #endif /* CONFIG_FST */
464 :
465 : #ifdef CONFIG_IEEE80211AC
466 3615 : if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
467 18 : pos = hostapd_eid_vht_capabilities(hapd, pos);
468 18 : pos = hostapd_eid_vht_operation(hapd, pos);
469 : }
470 3615 : if (hapd->conf->vendor_vht)
471 2 : pos = hostapd_eid_vendor_vht(hapd, pos);
472 : #endif /* CONFIG_IEEE80211AC */
473 :
474 : /* Wi-Fi Alliance WMM */
475 4052 : pos = hostapd_eid_wmm(hapd, pos);
476 :
477 : #ifdef CONFIG_WPS
478 4052 : if (hapd->conf->wps_state && hapd->wps_probe_resp_ie) {
479 1739 : os_memcpy(pos, wpabuf_head(hapd->wps_probe_resp_ie),
480 : wpabuf_len(hapd->wps_probe_resp_ie));
481 1739 : pos += wpabuf_len(hapd->wps_probe_resp_ie);
482 : }
483 : #endif /* CONFIG_WPS */
484 :
485 : #ifdef CONFIG_P2P
486 825 : if ((hapd->conf->p2p & P2P_ENABLED) && is_p2p &&
487 388 : hapd->p2p_probe_resp_ie) {
488 388 : os_memcpy(pos, wpabuf_head(hapd->p2p_probe_resp_ie),
489 : wpabuf_len(hapd->p2p_probe_resp_ie));
490 388 : pos += wpabuf_len(hapd->p2p_probe_resp_ie);
491 : }
492 : #endif /* CONFIG_P2P */
493 : #ifdef CONFIG_P2P_MANAGER
494 3615 : if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
495 : P2P_MANAGE)
496 6 : pos = hostapd_eid_p2p_manage(hapd, pos);
497 : #endif /* CONFIG_P2P_MANAGER */
498 :
499 : #ifdef CONFIG_HS20
500 4052 : pos = hostapd_eid_hs20_indication(hapd, pos);
501 4052 : pos = hostapd_eid_osen(hapd, pos);
502 : #endif /* CONFIG_HS20 */
503 :
504 4052 : if (hapd->conf->vendor_elements) {
505 10 : os_memcpy(pos, wpabuf_head(hapd->conf->vendor_elements),
506 : wpabuf_len(hapd->conf->vendor_elements));
507 10 : pos += wpabuf_len(hapd->conf->vendor_elements);
508 : }
509 :
510 4052 : *resp_len = pos - (u8 *) resp;
511 4052 : return (u8 *) resp;
512 : }
513 :
514 :
515 : enum ssid_match_result {
516 : NO_SSID_MATCH,
517 : EXACT_SSID_MATCH,
518 : WILDCARD_SSID_MATCH
519 : };
520 :
521 4194 : static enum ssid_match_result ssid_match(struct hostapd_data *hapd,
522 : const u8 *ssid, size_t ssid_len,
523 : const u8 *ssid_list,
524 : size_t ssid_list_len)
525 : {
526 : const u8 *pos, *end;
527 4194 : int wildcard = 0;
528 :
529 4194 : if (ssid_len == 0)
530 3588 : wildcard = 1;
531 4698 : if (ssid_len == hapd->conf->ssid.ssid_len &&
532 504 : os_memcmp(ssid, hapd->conf->ssid.ssid, ssid_len) == 0)
533 483 : return EXACT_SSID_MATCH;
534 :
535 3711 : if (ssid_list == NULL)
536 3711 : return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
537 :
538 0 : pos = ssid_list;
539 0 : end = ssid_list + ssid_list_len;
540 0 : while (pos + 1 <= end) {
541 0 : if (pos + 2 + pos[1] > end)
542 0 : break;
543 0 : if (pos[1] == 0)
544 0 : wildcard = 1;
545 0 : if (pos[1] == hapd->conf->ssid.ssid_len &&
546 0 : os_memcmp(pos + 2, hapd->conf->ssid.ssid, pos[1]) == 0)
547 0 : return EXACT_SSID_MATCH;
548 0 : pos += 2 + pos[1];
549 : }
550 :
551 0 : return wildcard ? WILDCARD_SSID_MATCH : NO_SSID_MATCH;
552 : }
553 :
554 :
555 6 : void sta_track_expire(struct hostapd_iface *iface, int force)
556 : {
557 : struct os_reltime now;
558 : struct hostapd_sta_info *info;
559 :
560 6 : if (!iface->num_sta_seen)
561 6 : return;
562 :
563 6 : os_get_reltime(&now);
564 15 : while ((info = dl_list_first(&iface->sta_seen, struct hostapd_sta_info,
565 : list))) {
566 15 : if (!force &&
567 7 : !os_reltime_expired(&now, &info->last_seen,
568 7 : iface->conf->track_sta_max_age))
569 5 : break;
570 3 : force = 0;
571 :
572 21 : wpa_printf(MSG_MSGDUMP, "%s: Expire STA tracking entry for "
573 3 : MACSTR, iface->bss[0]->conf->iface,
574 18 : MAC2STR(info->addr));
575 3 : dl_list_del(&info->list);
576 3 : iface->num_sta_seen--;
577 3 : os_free(info);
578 : }
579 : }
580 :
581 :
582 39 : static struct hostapd_sta_info * sta_track_get(struct hostapd_iface *iface,
583 : const u8 *addr)
584 : {
585 : struct hostapd_sta_info *info;
586 :
587 49 : dl_list_for_each(info, &iface->sta_seen, struct hostapd_sta_info, list)
588 33 : if (os_memcmp(addr, info->addr, ETH_ALEN) == 0)
589 23 : return info;
590 :
591 16 : return NULL;
592 : }
593 :
594 :
595 29 : void sta_track_add(struct hostapd_iface *iface, const u8 *addr)
596 : {
597 : struct hostapd_sta_info *info;
598 :
599 29 : info = sta_track_get(iface, addr);
600 29 : if (info) {
601 : /* Move the most recent entry to the end of the list */
602 17 : dl_list_del(&info->list);
603 17 : dl_list_add_tail(&iface->sta_seen, &info->list);
604 17 : os_get_reltime(&info->last_seen);
605 46 : return;
606 : }
607 :
608 : /* Add a new entry */
609 12 : info = os_zalloc(sizeof(*info));
610 12 : os_memcpy(info->addr, addr, ETH_ALEN);
611 12 : os_get_reltime(&info->last_seen);
612 :
613 12 : if (iface->num_sta_seen >= iface->conf->track_sta_max_num) {
614 : /* Expire oldest entry to make room for a new one */
615 1 : sta_track_expire(iface, 1);
616 : }
617 :
618 84 : wpa_printf(MSG_MSGDUMP, "%s: Add STA tracking entry for "
619 84 : MACSTR, iface->bss[0]->conf->iface, MAC2STR(addr));
620 12 : dl_list_add_tail(&iface->sta_seen, &info->list);
621 12 : iface->num_sta_seen++;
622 : }
623 :
624 :
625 : struct hostapd_data *
626 10 : sta_track_seen_on(struct hostapd_iface *iface, const u8 *addr,
627 : const char *ifname)
628 : {
629 10 : struct hapd_interfaces *interfaces = iface->interfaces;
630 : size_t i, j;
631 :
632 22 : for (i = 0; i < interfaces->count; i++) {
633 18 : struct hostapd_data *hapd = NULL;
634 :
635 18 : iface = interfaces->iface[i];
636 26 : for (j = 0; j < iface->num_bss; j++) {
637 18 : hapd = iface->bss[j];
638 18 : if (os_strcmp(ifname, hapd->conf->iface) == 0)
639 10 : break;
640 8 : hapd = NULL;
641 : }
642 :
643 18 : if (hapd && sta_track_get(iface, addr))
644 6 : return hapd;
645 : }
646 :
647 4 : return NULL;
648 : }
649 :
650 :
651 4220 : void handle_probe_req(struct hostapd_data *hapd,
652 : const struct ieee80211_mgmt *mgmt, size_t len,
653 : int ssi_signal)
654 : {
655 : u8 *resp;
656 : struct ieee802_11_elems elems;
657 : const u8 *ie;
658 : size_t ie_len;
659 : size_t i, resp_len;
660 : int noack;
661 : enum ssid_match_result res;
662 :
663 4220 : ie = mgmt->u.probe_req.variable;
664 4220 : if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req))
665 168 : return;
666 4220 : if (hapd->iconf->track_sta_max_num)
667 18 : sta_track_add(hapd->iface, mgmt->sa);
668 4220 : ie_len = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.probe_req));
669 :
670 6418 : for (i = 0; hapd->probereq_cb && i < hapd->num_probereq_cb; i++)
671 4402 : if (hapd->probereq_cb[i].cb(hapd->probereq_cb[i].ctx,
672 2201 : mgmt->sa, mgmt->da, mgmt->bssid,
673 : ie, ie_len, ssi_signal) > 0)
674 3 : return;
675 :
676 4217 : if (!hapd->iconf->send_probe_response)
677 0 : return;
678 :
679 4217 : if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
680 0 : wpa_printf(MSG_DEBUG, "Could not parse ProbeReq from " MACSTR,
681 0 : MAC2STR(mgmt->sa));
682 0 : return;
683 : }
684 :
685 4217 : if ((!elems.ssid || !elems.supp_rates)) {
686 0 : wpa_printf(MSG_DEBUG, "STA " MACSTR " sent probe request "
687 : "without SSID or supported rates element",
688 0 : MAC2STR(mgmt->sa));
689 0 : return;
690 : }
691 :
692 : /*
693 : * No need to reply if the Probe Request frame was sent on an adjacent
694 : * channel. IEEE Std 802.11-2012 describes this as a requirement for an
695 : * AP with dot11RadioMeasurementActivated set to true, but strictly
696 : * speaking does not allow such ignoring of Probe Request frames if
697 : * dot11RadioMeasurementActivated is false. Anyway, this can help reduce
698 : * number of unnecessary Probe Response frames for cases where the STA
699 : * is less likely to see them (Probe Request frame sent on a
700 : * neighboring, but partially overlapping, channel).
701 : */
702 7992 : if (elems.ds_params &&
703 7550 : hapd->iface->current_mode &&
704 3778 : (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G ||
705 3778 : hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211B) &&
706 3775 : hapd->iconf->channel != elems.ds_params[0]) {
707 2 : wpa_printf(MSG_DEBUG,
708 : "Ignore Probe Request due to DS Params mismatch: chan=%u != ds.chan=%u",
709 2 : hapd->iconf->channel, elems.ds_params[0]);
710 1 : return;
711 : }
712 :
713 : #ifdef CONFIG_P2P
714 444 : if (hapd->p2p && elems.wps_ie) {
715 : struct wpabuf *wps;
716 425 : wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
717 425 : if (wps && !p2p_group_match_dev_type(hapd->p2p_group, wps)) {
718 3 : wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
719 : "due to mismatch with Requested Device "
720 : "Type");
721 3 : wpabuf_free(wps);
722 3 : return;
723 : }
724 422 : wpabuf_free(wps);
725 : }
726 :
727 441 : if (hapd->p2p && elems.p2p) {
728 : struct wpabuf *p2p;
729 420 : p2p = ieee802_11_vendor_ie_concat(ie, ie_len, P2P_IE_VENDOR_TYPE);
730 420 : if (p2p && !p2p_group_match_dev_id(hapd->p2p_group, p2p)) {
731 3 : wpa_printf(MSG_MSGDUMP, "P2P: Ignore Probe Request "
732 : "due to mismatch with Device ID");
733 3 : wpabuf_free(p2p);
734 3 : return;
735 : }
736 417 : wpabuf_free(p2p);
737 : }
738 : #endif /* CONFIG_P2P */
739 :
740 4226 : if (hapd->conf->ignore_broadcast_ssid && elems.ssid_len == 0 &&
741 16 : elems.ssid_list_len == 0) {
742 96 : wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR " for "
743 96 : "broadcast SSID ignored", MAC2STR(mgmt->sa));
744 16 : return;
745 : }
746 :
747 : #ifdef CONFIG_P2P
748 846 : if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
749 547 : elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
750 139 : os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
751 : P2P_WILDCARD_SSID_LEN) == 0) {
752 : /* Process P2P Wildcard SSID like Wildcard SSID */
753 139 : elems.ssid_len = 0;
754 : }
755 : #endif /* CONFIG_P2P */
756 :
757 4194 : res = ssid_match(hapd, elems.ssid, elems.ssid_len,
758 4194 : elems.ssid_list, elems.ssid_list_len);
759 4194 : if (res == NO_SSID_MATCH) {
760 123 : if (!(mgmt->da[0] & 0x01)) {
761 0 : wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
762 : " for foreign SSID '%s' (DA " MACSTR ")%s",
763 0 : MAC2STR(mgmt->sa),
764 0 : wpa_ssid_txt(elems.ssid, elems.ssid_len),
765 0 : MAC2STR(mgmt->da),
766 0 : elems.ssid_list ? " (SSID list)" : "");
767 : }
768 123 : return;
769 : }
770 :
771 : #ifdef CONFIG_INTERWORKING
772 4391 : if (hapd->conf->interworking &&
773 600 : elems.interworking && elems.interworking_len >= 1) {
774 280 : u8 ant = elems.interworking[0] & 0x0f;
775 290 : if (ant != INTERWORKING_ANT_WILDCARD &&
776 10 : ant != hapd->conf->access_network_type) {
777 35 : wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
778 : " for mismatching ANT %u ignored",
779 30 : MAC2STR(mgmt->sa), ant);
780 5 : return;
781 : }
782 : }
783 :
784 4341 : if (hapd->conf->interworking && elems.interworking &&
785 545 : (elems.interworking_len == 7 || elems.interworking_len == 9)) {
786 : const u8 *hessid;
787 5 : if (elems.interworking_len == 7)
788 5 : hessid = elems.interworking + 1;
789 : else
790 0 : hessid = elems.interworking + 1 + 2;
791 10 : if (!is_broadcast_ether_addr(hessid) &&
792 5 : os_memcmp(hessid, hapd->conf->hessid, ETH_ALEN) != 0) {
793 36 : wpa_printf(MSG_MSGDUMP, "Probe Request from " MACSTR
794 : " for mismatching HESSID " MACSTR
795 : " ignored",
796 36 : MAC2STR(mgmt->sa), MAC2STR(hessid));
797 3 : return;
798 : }
799 : }
800 : #endif /* CONFIG_INTERWORKING */
801 :
802 : #ifdef CONFIG_P2P
803 844 : if ((hapd->conf->p2p & P2P_GROUP_OWNER) &&
804 407 : supp_rates_11b_only(&elems)) {
805 : /* Indicates support for 11b rates only */
806 0 : wpa_printf(MSG_EXCESSIVE, "P2P: Ignore Probe Request from "
807 : MACSTR " with only 802.11b rates",
808 0 : MAC2STR(mgmt->sa));
809 0 : return;
810 : }
811 : #endif /* CONFIG_P2P */
812 :
813 : /* TODO: verify that supp_rates contains at least one matching rate
814 : * with AP configuration */
815 :
816 4069 : if (hapd->conf->no_probe_resp_if_seen_on &&
817 12 : is_multicast_ether_addr(mgmt->da) &&
818 12 : is_multicast_ether_addr(mgmt->bssid) &&
819 6 : sta_track_seen_on(hapd->iface, mgmt->sa,
820 6 : hapd->conf->no_probe_resp_if_seen_on)) {
821 24 : wpa_printf(MSG_MSGDUMP, "%s: Ignore Probe Request from " MACSTR
822 : " since STA has been seen on %s",
823 21 : hapd->conf->iface, MAC2STR(mgmt->sa),
824 3 : hapd->conf->no_probe_resp_if_seen_on);
825 3 : return;
826 : }
827 :
828 : #ifdef CONFIG_TESTING_OPTIONS
829 4071 : if (hapd->iconf->ignore_probe_probability > 0.0 &&
830 11 : drand48() < hapd->iconf->ignore_probe_probability) {
831 48 : wpa_printf(MSG_INFO,
832 : "TESTING: ignoring probe request from " MACSTR,
833 48 : MAC2STR(mgmt->sa));
834 8 : return;
835 : }
836 : #endif /* CONFIG_TESTING_OPTIONS */
837 :
838 4052 : resp = hostapd_gen_probe_resp(hapd, mgmt, elems.p2p != NULL,
839 : &resp_len);
840 4052 : if (resp == NULL)
841 0 : return;
842 :
843 : /*
844 : * If this is a broadcast probe request, apply no ack policy to avoid
845 : * excessive retries.
846 : */
847 7621 : noack = !!(res == WILDCARD_SSID_MATCH &&
848 3569 : is_broadcast_ether_addr(mgmt->da));
849 :
850 4052 : if (hostapd_drv_send_mlme(hapd, resp, resp_len, noack) < 0)
851 4 : wpa_printf(MSG_INFO, "handle_probe_req: send failed");
852 :
853 4052 : os_free(resp);
854 :
855 28364 : wpa_printf(MSG_EXCESSIVE, "STA " MACSTR " sent probe request for %s "
856 24312 : "SSID", MAC2STR(mgmt->sa),
857 4052 : elems.ssid_len == 0 ? "broadcast" : "our");
858 : }
859 :
860 :
861 4500 : static u8 * hostapd_probe_resp_offloads(struct hostapd_data *hapd,
862 : size_t *resp_len)
863 : {
864 : /* check probe response offloading caps and print warnings */
865 4500 : if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD))
866 4500 : return NULL;
867 :
868 : #ifdef CONFIG_WPS
869 0 : if (hapd->conf->wps_state && hapd->wps_probe_resp_ie &&
870 0 : (!(hapd->iface->probe_resp_offloads &
871 : (WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS |
872 : WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2))))
873 0 : wpa_printf(MSG_WARNING, "Device is trying to offload WPS "
874 : "Probe Response while not supporting this");
875 : #endif /* CONFIG_WPS */
876 :
877 : #ifdef CONFIG_P2P
878 0 : if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_probe_resp_ie &&
879 0 : !(hapd->iface->probe_resp_offloads &
880 : WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P))
881 0 : wpa_printf(MSG_WARNING, "Device is trying to offload P2P "
882 : "Probe Response while not supporting this");
883 : #endif /* CONFIG_P2P */
884 :
885 0 : if (hapd->conf->interworking &&
886 0 : !(hapd->iface->probe_resp_offloads &
887 : WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING))
888 0 : wpa_printf(MSG_WARNING, "Device is trying to offload "
889 : "Interworking Probe Response while not supporting "
890 : "this");
891 :
892 : /* Generate a Probe Response template for the non-P2P case */
893 0 : return hostapd_gen_probe_resp(hapd, NULL, 0, resp_len);
894 : }
895 :
896 : #endif /* NEED_AP_MLME */
897 :
898 :
899 4502 : int ieee802_11_build_ap_params(struct hostapd_data *hapd,
900 : struct wpa_driver_ap_params *params)
901 : {
902 4502 : struct ieee80211_mgmt *head = NULL;
903 4502 : u8 *tail = NULL;
904 4502 : size_t head_len = 0, tail_len = 0;
905 4502 : u8 *resp = NULL;
906 4502 : size_t resp_len = 0;
907 : #ifdef NEED_AP_MLME
908 : u16 capab_info;
909 : u8 *pos, *tailpos;
910 :
911 : #define BEACON_HEAD_BUF_SIZE 256
912 : #define BEACON_TAIL_BUF_SIZE 512
913 4502 : head = os_zalloc(BEACON_HEAD_BUF_SIZE);
914 4502 : tail_len = BEACON_TAIL_BUF_SIZE;
915 : #ifdef CONFIG_WPS
916 4502 : if (hapd->conf->wps_state && hapd->wps_beacon_ie)
917 2327 : tail_len += wpabuf_len(hapd->wps_beacon_ie);
918 : #endif /* CONFIG_WPS */
919 : #ifdef CONFIG_P2P
920 1696 : if (hapd->p2p_beacon_ie)
921 1603 : tail_len += wpabuf_len(hapd->p2p_beacon_ie);
922 : #endif /* CONFIG_P2P */
923 : #ifdef CONFIG_FST
924 4502 : if (hapd->iface->fst_ies)
925 266 : tail_len += wpabuf_len(hapd->iface->fst_ies);
926 : #endif /* CONFIG_FST */
927 4502 : if (hapd->conf->vendor_elements)
928 7 : tail_len += wpabuf_len(hapd->conf->vendor_elements);
929 :
930 : #ifdef CONFIG_IEEE80211AC
931 2806 : if (hapd->conf->vendor_vht) {
932 1 : tail_len += 5 + 2 + sizeof(struct ieee80211_vht_capabilities) +
933 : 2 + sizeof(struct ieee80211_vht_operation);
934 : }
935 : #endif /* CONFIG_IEEE80211AC */
936 :
937 4502 : tailpos = tail = os_malloc(tail_len);
938 4502 : if (head == NULL || tail == NULL) {
939 2 : wpa_printf(MSG_ERROR, "Failed to set beacon data");
940 2 : os_free(head);
941 2 : os_free(tail);
942 2 : return -1;
943 : }
944 :
945 4500 : head->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
946 : WLAN_FC_STYPE_BEACON);
947 4500 : head->duration = host_to_le16(0);
948 4500 : os_memset(head->da, 0xff, ETH_ALEN);
949 :
950 4500 : os_memcpy(head->sa, hapd->own_addr, ETH_ALEN);
951 4500 : os_memcpy(head->bssid, hapd->own_addr, ETH_ALEN);
952 4500 : head->u.beacon.beacon_int =
953 4500 : host_to_le16(hapd->iconf->beacon_int);
954 :
955 : /* hardware or low-level driver will setup seq_ctrl and timestamp */
956 4500 : capab_info = hostapd_own_capab_info(hapd);
957 4500 : head->u.beacon.capab_info = host_to_le16(capab_info);
958 4500 : pos = &head->u.beacon.variable[0];
959 :
960 : /* SSID */
961 4500 : *pos++ = WLAN_EID_SSID;
962 4500 : if (hapd->conf->ignore_broadcast_ssid == 2) {
963 : /* clear the data, but keep the correct length of the SSID */
964 1 : *pos++ = hapd->conf->ssid.ssid_len;
965 1 : os_memset(pos, 0, hapd->conf->ssid.ssid_len);
966 1 : pos += hapd->conf->ssid.ssid_len;
967 4499 : } else if (hapd->conf->ignore_broadcast_ssid) {
968 9 : *pos++ = 0; /* empty SSID */
969 : } else {
970 4490 : *pos++ = hapd->conf->ssid.ssid_len;
971 4490 : os_memcpy(pos, hapd->conf->ssid.ssid,
972 : hapd->conf->ssid.ssid_len);
973 4490 : pos += hapd->conf->ssid.ssid_len;
974 : }
975 :
976 : /* Supported rates */
977 4500 : pos = hostapd_eid_supp_rates(hapd, pos);
978 :
979 : /* DS Params */
980 4500 : pos = hostapd_eid_ds_params(hapd, pos);
981 :
982 4500 : head_len = pos - (u8 *) head;
983 :
984 4500 : tailpos = hostapd_eid_country(hapd, tailpos,
985 4500 : tail + BEACON_TAIL_BUF_SIZE - tailpos);
986 :
987 : /* Power Constraint element */
988 4500 : tailpos = hostapd_eid_pwr_constraint(hapd, tailpos);
989 :
990 : /* ERP Information element */
991 4500 : tailpos = hostapd_eid_erp_info(hapd, tailpos);
992 :
993 : /* Extended supported rates */
994 4500 : tailpos = hostapd_eid_ext_supp_rates(hapd, tailpos);
995 :
996 : /* RSN, MDIE, WPA */
997 4500 : tailpos = hostapd_eid_wpa(hapd, tailpos, tail + BEACON_TAIL_BUF_SIZE -
998 : tailpos);
999 :
1000 4500 : tailpos = hostapd_eid_rm_enabled_capab(hapd, tailpos,
1001 4500 : tail + BEACON_TAIL_BUF_SIZE -
1002 : tailpos);
1003 :
1004 4500 : tailpos = hostapd_eid_bss_load(hapd, tailpos,
1005 4500 : tail + BEACON_TAIL_BUF_SIZE - tailpos);
1006 :
1007 : #ifdef CONFIG_IEEE80211N
1008 4500 : tailpos = hostapd_eid_ht_capabilities(hapd, tailpos);
1009 4500 : tailpos = hostapd_eid_ht_operation(hapd, tailpos);
1010 : #endif /* CONFIG_IEEE80211N */
1011 :
1012 4500 : tailpos = hostapd_eid_ext_capab(hapd, tailpos);
1013 :
1014 : /*
1015 : * TODO: Time Advertisement element should only be included in some
1016 : * DTIM Beacon frames.
1017 : */
1018 4500 : tailpos = hostapd_eid_time_adv(hapd, tailpos);
1019 :
1020 4500 : tailpos = hostapd_eid_interworking(hapd, tailpos);
1021 4500 : tailpos = hostapd_eid_adv_proto(hapd, tailpos);
1022 4500 : tailpos = hostapd_eid_roaming_consortium(hapd, tailpos);
1023 4500 : tailpos = hostapd_add_csa_elems(hapd, tailpos, tail,
1024 : &hapd->cs_c_off_beacon);
1025 :
1026 : #ifdef CONFIG_FST
1027 4500 : if (hapd->iface->fst_ies) {
1028 266 : os_memcpy(tailpos, wpabuf_head(hapd->iface->fst_ies),
1029 : wpabuf_len(hapd->iface->fst_ies));
1030 266 : tailpos += wpabuf_len(hapd->iface->fst_ies);
1031 : }
1032 : #endif /* CONFIG_FST */
1033 :
1034 : #ifdef CONFIG_IEEE80211AC
1035 2804 : if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
1036 21 : tailpos = hostapd_eid_vht_capabilities(hapd, tailpos);
1037 21 : tailpos = hostapd_eid_vht_operation(hapd, tailpos);
1038 : }
1039 2804 : if (hapd->conf->vendor_vht)
1040 1 : tailpos = hostapd_eid_vendor_vht(hapd, tailpos);
1041 : #endif /* CONFIG_IEEE80211AC */
1042 :
1043 : /* Wi-Fi Alliance WMM */
1044 4500 : tailpos = hostapd_eid_wmm(hapd, tailpos);
1045 :
1046 : #ifdef CONFIG_WPS
1047 4500 : if (hapd->conf->wps_state && hapd->wps_beacon_ie) {
1048 2327 : os_memcpy(tailpos, wpabuf_head(hapd->wps_beacon_ie),
1049 : wpabuf_len(hapd->wps_beacon_ie));
1050 2327 : tailpos += wpabuf_len(hapd->wps_beacon_ie);
1051 : }
1052 : #endif /* CONFIG_WPS */
1053 :
1054 : #ifdef CONFIG_P2P
1055 1696 : if ((hapd->conf->p2p & P2P_ENABLED) && hapd->p2p_beacon_ie) {
1056 1603 : os_memcpy(tailpos, wpabuf_head(hapd->p2p_beacon_ie),
1057 : wpabuf_len(hapd->p2p_beacon_ie));
1058 1603 : tailpos += wpabuf_len(hapd->p2p_beacon_ie);
1059 : }
1060 : #endif /* CONFIG_P2P */
1061 : #ifdef CONFIG_P2P_MANAGER
1062 2804 : if ((hapd->conf->p2p & (P2P_MANAGE | P2P_ENABLED | P2P_GROUP_OWNER)) ==
1063 : P2P_MANAGE)
1064 5 : tailpos = hostapd_eid_p2p_manage(hapd, tailpos);
1065 : #endif /* CONFIG_P2P_MANAGER */
1066 :
1067 : #ifdef CONFIG_HS20
1068 4500 : tailpos = hostapd_eid_hs20_indication(hapd, tailpos);
1069 4500 : tailpos = hostapd_eid_osen(hapd, tailpos);
1070 : #endif /* CONFIG_HS20 */
1071 :
1072 4500 : if (hapd->conf->vendor_elements) {
1073 7 : os_memcpy(tailpos, wpabuf_head(hapd->conf->vendor_elements),
1074 : wpabuf_len(hapd->conf->vendor_elements));
1075 7 : tailpos += wpabuf_len(hapd->conf->vendor_elements);
1076 : }
1077 :
1078 4500 : tail_len = tailpos > tail ? tailpos - tail : 0;
1079 :
1080 4500 : resp = hostapd_probe_resp_offloads(hapd, &resp_len);
1081 : #endif /* NEED_AP_MLME */
1082 :
1083 4500 : os_memset(params, 0, sizeof(*params));
1084 4500 : params->head = (u8 *) head;
1085 4500 : params->head_len = head_len;
1086 4500 : params->tail = tail;
1087 4500 : params->tail_len = tail_len;
1088 4500 : params->proberesp = resp;
1089 4500 : params->proberesp_len = resp_len;
1090 4500 : params->dtim_period = hapd->conf->dtim_period;
1091 4500 : params->beacon_int = hapd->iconf->beacon_int;
1092 4500 : params->basic_rates = hapd->iface->basic_rates;
1093 4500 : params->ssid = hapd->conf->ssid.ssid;
1094 4500 : params->ssid_len = hapd->conf->ssid.ssid_len;
1095 4500 : if ((hapd->conf->wpa & (WPA_PROTO_WPA | WPA_PROTO_RSN)) ==
1096 : (WPA_PROTO_WPA | WPA_PROTO_RSN))
1097 188 : params->pairwise_ciphers = hapd->conf->wpa_pairwise |
1098 94 : hapd->conf->rsn_pairwise;
1099 4406 : else if (hapd->conf->wpa & WPA_PROTO_RSN)
1100 2891 : params->pairwise_ciphers = hapd->conf->rsn_pairwise;
1101 1515 : else if (hapd->conf->wpa & WPA_PROTO_WPA)
1102 44 : params->pairwise_ciphers = hapd->conf->wpa_pairwise;
1103 4500 : params->group_cipher = hapd->conf->wpa_group;
1104 4500 : params->key_mgmt_suites = hapd->conf->wpa_key_mgmt;
1105 4500 : params->auth_algs = hapd->conf->auth_algs;
1106 4500 : params->wpa_version = hapd->conf->wpa;
1107 9003 : params->privacy = hapd->conf->ssid.wep.keys_set || hapd->conf->wpa ||
1108 1441 : (hapd->conf->ieee802_1x &&
1109 19 : (hapd->conf->default_wep_key_len ||
1110 8 : hapd->conf->individual_wep_key_len));
1111 4500 : switch (hapd->conf->ignore_broadcast_ssid) {
1112 : case 0:
1113 4490 : params->hide_ssid = NO_SSID_HIDING;
1114 4490 : break;
1115 : case 1:
1116 9 : params->hide_ssid = HIDDEN_SSID_ZERO_LEN;
1117 9 : break;
1118 : case 2:
1119 1 : params->hide_ssid = HIDDEN_SSID_ZERO_CONTENTS;
1120 1 : break;
1121 : }
1122 4500 : params->isolate = hapd->conf->isolate;
1123 4500 : params->smps_mode = hapd->iconf->ht_capab & HT_CAP_INFO_SMPS_MASK;
1124 : #ifdef NEED_AP_MLME
1125 4500 : params->cts_protect = !!(ieee802_11_erp_info(hapd) &
1126 : ERP_INFO_USE_PROTECTION);
1127 8955 : params->preamble = hapd->iface->num_sta_no_short_preamble == 0 &&
1128 4455 : hapd->iconf->preamble == SHORT_PREAMBLE;
1129 8988 : if (hapd->iface->current_mode &&
1130 4488 : hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
1131 3923 : params->short_slot_time =
1132 3923 : hapd->iface->num_sta_no_short_slot_time > 0 ? 0 : 1;
1133 : else
1134 577 : params->short_slot_time = -1;
1135 4500 : if (!hapd->iconf->ieee80211n || hapd->conf->disable_11n)
1136 149 : params->ht_opmode = -1;
1137 : else
1138 4351 : params->ht_opmode = hapd->iface->ht_op_mode;
1139 : #endif /* NEED_AP_MLME */
1140 4500 : params->interworking = hapd->conf->interworking;
1141 4626 : if (hapd->conf->interworking &&
1142 126 : !is_zero_ether_addr(hapd->conf->hessid))
1143 58 : params->hessid = hapd->conf->hessid;
1144 4500 : params->access_network_type = hapd->conf->access_network_type;
1145 4500 : params->ap_max_inactivity = hapd->conf->ap_max_inactivity;
1146 : #ifdef CONFIG_P2P
1147 1696 : params->p2p_go_ctwindow = hapd->iconf->p2p_go_ctwindow;
1148 : #endif /* CONFIG_P2P */
1149 : #ifdef CONFIG_HS20
1150 4500 : params->disable_dgaf = hapd->conf->disable_dgaf;
1151 4500 : if (hapd->conf->osen) {
1152 1 : params->privacy = 1;
1153 1 : params->osen = 1;
1154 : }
1155 : #endif /* CONFIG_HS20 */
1156 4500 : return 0;
1157 : }
1158 :
1159 :
1160 4500 : void ieee802_11_free_ap_params(struct wpa_driver_ap_params *params)
1161 : {
1162 4500 : os_free(params->tail);
1163 4500 : params->tail = NULL;
1164 4500 : os_free(params->head);
1165 4500 : params->head = NULL;
1166 4500 : os_free(params->proberesp);
1167 4500 : params->proberesp = NULL;
1168 4500 : }
1169 :
1170 :
1171 4456 : int ieee802_11_set_beacon(struct hostapd_data *hapd)
1172 : {
1173 : struct wpa_driver_ap_params params;
1174 : struct hostapd_freq_params freq;
1175 4456 : struct hostapd_iface *iface = hapd->iface;
1176 4456 : struct hostapd_config *iconf = iface->conf;
1177 : struct wpabuf *beacon, *proberesp, *assocresp;
1178 4456 : int res, ret = -1;
1179 :
1180 4456 : if (hapd->csa_in_progress) {
1181 0 : wpa_printf(MSG_ERROR, "Cannot set beacons during CSA period");
1182 0 : return -1;
1183 : }
1184 :
1185 4456 : hapd->beacon_set_done = 1;
1186 :
1187 4456 : if (ieee802_11_build_ap_params(hapd, ¶ms) < 0)
1188 2 : return -1;
1189 :
1190 4454 : if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
1191 : 0)
1192 0 : goto fail;
1193 :
1194 4454 : params.beacon_ies = beacon;
1195 4454 : params.proberesp_ies = proberesp;
1196 4454 : params.assocresp_ies = assocresp;
1197 4454 : params.reenable = hapd->reenable_beacon;
1198 4454 : hapd->reenable_beacon = 0;
1199 :
1200 8896 : if (iface->current_mode &&
1201 22210 : hostapd_set_freq_params(&freq, iconf->hw_mode, iface->freq,
1202 4442 : iconf->channel, iconf->ieee80211n,
1203 : iconf->ieee80211ac,
1204 : iconf->secondary_channel,
1205 4442 : iconf->vht_oper_chwidth,
1206 4442 : iconf->vht_oper_centr_freq_seg0_idx,
1207 4442 : iconf->vht_oper_centr_freq_seg1_idx,
1208 4442 : iface->current_mode->vht_capab) == 0)
1209 4442 : params.freq = &freq;
1210 :
1211 4454 : res = hostapd_drv_set_ap(hapd, ¶ms);
1212 4454 : hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
1213 4454 : if (res)
1214 63 : wpa_printf(MSG_ERROR, "Failed to set beacon parameters");
1215 : else
1216 4391 : ret = 0;
1217 : fail:
1218 4454 : ieee802_11_free_ap_params(¶ms);
1219 4454 : return ret;
1220 : }
1221 :
1222 :
1223 901 : int ieee802_11_set_beacons(struct hostapd_iface *iface)
1224 : {
1225 : size_t i;
1226 901 : int ret = 0;
1227 :
1228 1806 : for (i = 0; i < iface->num_bss; i++) {
1229 1810 : if (iface->bss[i]->started &&
1230 905 : ieee802_11_set_beacon(iface->bss[i]) < 0)
1231 62 : ret = -1;
1232 : }
1233 :
1234 901 : return ret;
1235 : }
1236 :
1237 :
1238 : /* only update beacons if started */
1239 7 : int ieee802_11_update_beacons(struct hostapd_iface *iface)
1240 : {
1241 : size_t i;
1242 7 : int ret = 0;
1243 :
1244 14 : for (i = 0; i < iface->num_bss; i++) {
1245 14 : if (iface->bss[i]->beacon_set_done && iface->bss[i]->started &&
1246 7 : ieee802_11_set_beacon(iface->bss[i]) < 0)
1247 0 : ret = -1;
1248 : }
1249 :
1250 7 : return ret;
1251 : }
1252 :
1253 : #endif /* CONFIG_NATIVE_WINDOWS */
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