Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / ap / hostapd.c
CommitLineData
4781064b
JM
1/*
2 * hostapd / Initialization and configuration
3 * Copyright (c) 2002-2014, 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 "utils/eloop.h"
13#include "common/ieee802_11_defs.h"
14#include "common/wpa_ctrl.h"
15#include "radius/radius_client.h"
16#include "radius/radius_das.h"
17#include "hostapd.h"
18#include "authsrv.h"
19#include "sta_info.h"
20#include "accounting.h"
21#include "ap_list.h"
22#include "beacon.h"
23#include "iapp.h"
24#include "ieee802_1x.h"
25#include "ieee802_11_auth.h"
26#include "vlan_init.h"
27#include "wpa_auth.h"
28#include "wps_hostapd.h"
29#include "hw_features.h"
30#include "wpa_auth_glue.h"
31#include "ap_drv_ops.h"
32#include "ap_config.h"
33#include "p2p_hostapd.h"
34#include "gas_serv.h"
35#include "dfs.h"
36
37
38static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
39static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
40static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
41static int setup_interface2(struct hostapd_iface *iface);
42static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx);
43
44
45int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
46 int (*cb)(struct hostapd_iface *iface,
47 void *ctx), void *ctx)
48{
49 size_t i;
50 int ret;
51
52 for (i = 0; i < interfaces->count; i++) {
53 ret = cb(interfaces->iface[i], ctx);
54 if (ret)
55 return ret;
56 }
57
58 return 0;
59}
60
61
62static void hostapd_reload_bss(struct hostapd_data *hapd)
63{
64 struct hostapd_ssid *ssid;
65
66#ifndef CONFIG_NO_RADIUS
67 radius_client_reconfig(hapd->radius, hapd->conf->radius);
68#endif /* CONFIG_NO_RADIUS */
69
70 ssid = &hapd->conf->ssid;
71 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
72 ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
73 /*
74 * Force PSK to be derived again since SSID or passphrase may
75 * have changed.
76 */
77 os_free(ssid->wpa_psk);
78 ssid->wpa_psk = NULL;
79 }
80 if (hostapd_setup_wpa_psk(hapd->conf)) {
81 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
82 "after reloading configuration");
83 }
84
85 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
86 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
87 else
88 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
89
90 if (hapd->conf->wpa && hapd->wpa_auth == NULL) {
91 hostapd_setup_wpa(hapd);
92 if (hapd->wpa_auth)
93 wpa_init_keys(hapd->wpa_auth);
94 } else if (hapd->conf->wpa) {
95 const u8 *wpa_ie;
96 size_t wpa_ie_len;
97 hostapd_reconfig_wpa(hapd);
98 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
99 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
100 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
101 "the kernel driver.");
102 } else if (hapd->wpa_auth) {
103 wpa_deinit(hapd->wpa_auth);
104 hapd->wpa_auth = NULL;
105 hostapd_set_privacy(hapd, 0);
106 hostapd_setup_encryption(hapd->conf->iface, hapd);
107 hostapd_set_generic_elem(hapd, (u8 *) "", 0);
108 }
109
110 ieee802_11_set_beacon(hapd);
111 hostapd_update_wps(hapd);
112
113 if (hapd->conf->ssid.ssid_set &&
114 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
115 hapd->conf->ssid.ssid_len)) {
116 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
117 /* try to continue */
118 }
119 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
120}
121
122
123static void hostapd_clear_old(struct hostapd_iface *iface)
124{
125 size_t j;
126
127 /*
128 * Deauthenticate all stations since the new configuration may not
129 * allow them to use the BSS anymore.
130 */
131 for (j = 0; j < iface->num_bss; j++) {
132 hostapd_flush_old_stations(iface->bss[j],
133 WLAN_REASON_PREV_AUTH_NOT_VALID);
134 hostapd_broadcast_wep_clear(iface->bss[j]);
135
136#ifndef CONFIG_NO_RADIUS
137 /* TODO: update dynamic data based on changed configuration
138 * items (e.g., open/close sockets, etc.) */
139 radius_client_flush(iface->bss[j]->radius, 0);
140#endif /* CONFIG_NO_RADIUS */
141 }
142}
143
144
145int hostapd_reload_config(struct hostapd_iface *iface)
146{
147 struct hostapd_data *hapd = iface->bss[0];
148 struct hostapd_config *newconf, *oldconf;
149 size_t j;
150
151 if (iface->config_fname == NULL) {
152 /* Only in-memory config in use - assume it has been updated */
153 hostapd_clear_old(iface);
154 for (j = 0; j < iface->num_bss; j++)
155 hostapd_reload_bss(iface->bss[j]);
156 return 0;
157 }
158
159 if (iface->interfaces == NULL ||
160 iface->interfaces->config_read_cb == NULL)
161 return -1;
162 newconf = iface->interfaces->config_read_cb(iface->config_fname);
163 if (newconf == NULL)
164 return -1;
165
166 hostapd_clear_old(iface);
167
168 oldconf = hapd->iconf;
169 iface->conf = newconf;
170
171 for (j = 0; j < iface->num_bss; j++) {
172 hapd = iface->bss[j];
173 hapd->iconf = newconf;
174 hapd->conf = newconf->bss[j];
175 hostapd_reload_bss(hapd);
176 }
177
178 hostapd_config_free(oldconf);
179
180
181 return 0;
182}
183
184
185static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
186 char *ifname)
187{
188 int i;
189
190 for (i = 0; i < NUM_WEP_KEYS; i++) {
191 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
192 0, NULL, 0, NULL, 0)) {
193 wpa_printf(MSG_DEBUG, "Failed to clear default "
194 "encryption keys (ifname=%s keyidx=%d)",
195 ifname, i);
196 }
197 }
198#ifdef CONFIG_IEEE80211W
199 if (hapd->conf->ieee80211w) {
200 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
201 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
202 NULL, i, 0, NULL,
203 0, NULL, 0)) {
204 wpa_printf(MSG_DEBUG, "Failed to clear "
205 "default mgmt encryption keys "
206 "(ifname=%s keyidx=%d)", ifname, i);
207 }
208 }
209 }
210#endif /* CONFIG_IEEE80211W */
211}
212
213
214static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
215{
216 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
217 return 0;
218}
219
220
221static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
222{
223 int errors = 0, idx;
224 struct hostapd_ssid *ssid = &hapd->conf->ssid;
225
226 idx = ssid->wep.idx;
227 if (ssid->wep.default_len &&
228 hostapd_drv_set_key(hapd->conf->iface,
229 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
230 1, NULL, 0, ssid->wep.key[idx],
231 ssid->wep.len[idx])) {
232 wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
233 errors++;
234 }
235
236 return errors;
237}
238
239
240static void hostapd_free_hapd_data(struct hostapd_data *hapd)
241{
242 if (!hapd->started) {
243 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started",
244 __func__, hapd->conf->iface);
245 return;
246 }
247 hapd->started = 0;
248
249 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface);
250 iapp_deinit(hapd->iapp);
251 hapd->iapp = NULL;
252 accounting_deinit(hapd);
253 hostapd_deinit_wpa(hapd);
254 vlan_deinit(hapd);
255 hostapd_acl_deinit(hapd);
256#ifndef CONFIG_NO_RADIUS
257 radius_client_deinit(hapd->radius);
258 hapd->radius = NULL;
259 radius_das_deinit(hapd->radius_das);
260 hapd->radius_das = NULL;
261#endif /* CONFIG_NO_RADIUS */
262
263 hostapd_deinit_wps(hapd);
264
265 authsrv_deinit(hapd);
266
267 if (hapd->interface_added &&
268 hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
269 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
270 hapd->conf->iface);
271 }
272
273 os_free(hapd->probereq_cb);
274 hapd->probereq_cb = NULL;
275
276#ifdef CONFIG_P2P
277 wpabuf_free(hapd->p2p_beacon_ie);
278 hapd->p2p_beacon_ie = NULL;
279 wpabuf_free(hapd->p2p_probe_resp_ie);
280 hapd->p2p_probe_resp_ie = NULL;
281#endif /* CONFIG_P2P */
282
283 wpabuf_free(hapd->time_adv);
284
285#ifdef CONFIG_INTERWORKING
286 gas_serv_deinit(hapd);
287#endif /* CONFIG_INTERWORKING */
288
289#ifdef CONFIG_SQLITE
290 os_free(hapd->tmp_eap_user.identity);
291 os_free(hapd->tmp_eap_user.password);
292#endif /* CONFIG_SQLITE */
293}
294
295
296/**
297 * hostapd_cleanup - Per-BSS cleanup (deinitialization)
298 * @hapd: Pointer to BSS data
299 *
300 * This function is used to free all per-BSS data structures and resources.
301 * Most of the modules that are initialized in hostapd_setup_bss() are
302 * deinitialized here.
303 */
304static void hostapd_cleanup(struct hostapd_data *hapd)
305{
306 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
307 hapd->conf->iface);
308 if (hapd->iface->interfaces &&
309 hapd->iface->interfaces->ctrl_iface_deinit)
310 hapd->iface->interfaces->ctrl_iface_deinit(hapd);
311 hostapd_free_hapd_data(hapd);
312}
313
314
315static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
316{
317 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
318 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
319 iface->hw_features = NULL;
320 os_free(iface->current_rates);
321 iface->current_rates = NULL;
322 os_free(iface->basic_rates);
323 iface->basic_rates = NULL;
324 ap_list_deinit(iface);
325}
326
327
328/**
329 * hostapd_cleanup_iface - Complete per-interface cleanup
330 * @iface: Pointer to interface data
331 *
332 * This function is called after per-BSS data structures are deinitialized
333 * with hostapd_cleanup().
334 */
335static void hostapd_cleanup_iface(struct hostapd_iface *iface)
336{
337 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
338 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
339
340 hostapd_cleanup_iface_partial(iface);
341 hostapd_config_free(iface->conf);
342 iface->conf = NULL;
343
344 os_free(iface->config_fname);
345 os_free(iface->bss);
346 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface);
347 os_free(iface);
348}
349
350
351static void hostapd_clear_wep(struct hostapd_data *hapd)
352{
353 if (hapd->drv_priv) {
354 hostapd_set_privacy(hapd, 0);
355 hostapd_broadcast_wep_clear(hapd);
356 }
357}
358
359
360static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
361{
362 int i;
363
364 hostapd_broadcast_wep_set(hapd);
365
366 if (hapd->conf->ssid.wep.default_len) {
367 hostapd_set_privacy(hapd, 1);
368 return 0;
369 }
370
371 /*
372 * When IEEE 802.1X is not enabled, the driver may need to know how to
373 * set authentication algorithms for static WEP.
374 */
375 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
376
377 for (i = 0; i < 4; i++) {
378 if (hapd->conf->ssid.wep.key[i] &&
379 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
380 i == hapd->conf->ssid.wep.idx, NULL, 0,
381 hapd->conf->ssid.wep.key[i],
382 hapd->conf->ssid.wep.len[i])) {
383 wpa_printf(MSG_WARNING, "Could not set WEP "
384 "encryption.");
385 return -1;
386 }
387 if (hapd->conf->ssid.wep.key[i] &&
388 i == hapd->conf->ssid.wep.idx)
389 hostapd_set_privacy(hapd, 1);
390 }
391
392 return 0;
393}
394
395
396static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
397{
398 int ret = 0;
399 u8 addr[ETH_ALEN];
400
401 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
402 return 0;
403
404 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Flushing old station entries");
405 if (hostapd_flush(hapd)) {
406 wpa_msg(hapd->msg_ctx, MSG_WARNING, "Could not connect to "
407 "kernel driver");
408 ret = -1;
409 }
410 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
411 os_memset(addr, 0xff, ETH_ALEN);
412 hostapd_drv_sta_deauth(hapd, addr, reason);
413 hostapd_free_stas(hapd);
414
415 return ret;
416}
417
418
419/**
420 * hostapd_validate_bssid_configuration - Validate BSSID configuration
421 * @iface: Pointer to interface data
422 * Returns: 0 on success, -1 on failure
423 *
424 * This function is used to validate that the configured BSSIDs are valid.
425 */
426static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
427{
428 u8 mask[ETH_ALEN] = { 0 };
429 struct hostapd_data *hapd = iface->bss[0];
430 unsigned int i = iface->conf->num_bss, bits = 0, j;
431 int auto_addr = 0;
432
433 if (hostapd_drv_none(hapd))
434 return 0;
435
436 /* Generate BSSID mask that is large enough to cover the BSSIDs. */
437
438 /* Determine the bits necessary to cover the number of BSSIDs. */
439 for (i--; i; i >>= 1)
440 bits++;
441
442 /* Determine the bits necessary to any configured BSSIDs,
443 if they are higher than the number of BSSIDs. */
444 for (j = 0; j < iface->conf->num_bss; j++) {
445 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) {
446 if (j)
447 auto_addr++;
448 continue;
449 }
450
451 for (i = 0; i < ETH_ALEN; i++) {
452 mask[i] |=
453 iface->conf->bss[j]->bssid[i] ^
454 hapd->own_addr[i];
455 }
456 }
457
458 if (!auto_addr)
459 goto skip_mask_ext;
460
461 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
462 ;
463 j = 0;
464 if (i < ETH_ALEN) {
465 j = (5 - i) * 8;
466
467 while (mask[i] != 0) {
468 mask[i] >>= 1;
469 j++;
470 }
471 }
472
473 if (bits < j)
474 bits = j;
475
476 if (bits > 40) {
477 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
478 bits);
479 return -1;
480 }
481
482 os_memset(mask, 0xff, ETH_ALEN);
483 j = bits / 8;
484 for (i = 5; i > 5 - j; i--)
485 mask[i] = 0;
486 j = bits % 8;
487 while (j--)
488 mask[i] <<= 1;
489
490skip_mask_ext:
491 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
492 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
493
494 if (!auto_addr)
495 return 0;
496
497 for (i = 0; i < ETH_ALEN; i++) {
498 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
499 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
500 " for start address " MACSTR ".",
501 MAC2STR(mask), MAC2STR(hapd->own_addr));
502 wpa_printf(MSG_ERROR, "Start address must be the "
503 "first address in the block (i.e., addr "
504 "AND mask == addr).");
505 return -1;
506 }
507 }
508
509 return 0;
510}
511
512
513static int mac_in_conf(struct hostapd_config *conf, const void *a)
514{
515 size_t i;
516
517 for (i = 0; i < conf->num_bss; i++) {
518 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) {
519 return 1;
520 }
521 }
522
523 return 0;
524}
525
526
527#ifndef CONFIG_NO_RADIUS
528
529static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
530 struct radius_das_attrs *attr)
531{
532 /* TODO */
533 return 0;
534}
535
536
537static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
538 struct radius_das_attrs *attr)
539{
540 struct sta_info *sta = NULL;
541 char buf[128];
542
543 if (attr->sta_addr)
544 sta = ap_get_sta(hapd, attr->sta_addr);
545
546 if (sta == NULL && attr->acct_session_id &&
547 attr->acct_session_id_len == 17) {
548 for (sta = hapd->sta_list; sta; sta = sta->next) {
549 os_snprintf(buf, sizeof(buf), "%08X-%08X",
550 sta->acct_session_id_hi,
551 sta->acct_session_id_lo);
552 if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
553 break;
554 }
555 }
556
557 if (sta == NULL && attr->cui) {
558 for (sta = hapd->sta_list; sta; sta = sta->next) {
559 struct wpabuf *cui;
560 cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
561 if (cui && wpabuf_len(cui) == attr->cui_len &&
562 os_memcmp(wpabuf_head(cui), attr->cui,
563 attr->cui_len) == 0)
564 break;
565 }
566 }
567
568 if (sta == NULL && attr->user_name) {
569 for (sta = hapd->sta_list; sta; sta = sta->next) {
570 u8 *identity;
571 size_t identity_len;
572 identity = ieee802_1x_get_identity(sta->eapol_sm,
573 &identity_len);
574 if (identity &&
575 identity_len == attr->user_name_len &&
576 os_memcmp(identity, attr->user_name, identity_len)
577 == 0)
578 break;
579 }
580 }
581
582 return sta;
583}
584
585
586static enum radius_das_res
587hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
588{
589 struct hostapd_data *hapd = ctx;
590 struct sta_info *sta;
591
592 if (hostapd_das_nas_mismatch(hapd, attr))
593 return RADIUS_DAS_NAS_MISMATCH;
594
595 sta = hostapd_das_find_sta(hapd, attr);
596 if (sta == NULL)
597 return RADIUS_DAS_SESSION_NOT_FOUND;
598
599 hostapd_drv_sta_deauth(hapd, sta->addr,
600 WLAN_REASON_PREV_AUTH_NOT_VALID);
601 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
602
603 return RADIUS_DAS_SUCCESS;
604}
605
606#endif /* CONFIG_NO_RADIUS */
607
608
609/**
610 * hostapd_setup_bss - Per-BSS setup (initialization)
611 * @hapd: Pointer to BSS data
612 * @first: Whether this BSS is the first BSS of an interface; -1 = not first,
613 * but interface may exist
614 *
615 * This function is used to initialize all per-BSS data structures and
616 * resources. This gets called in a loop for each BSS when an interface is
617 * initialized. Most of the modules that are initialized here will be
618 * deinitialized in hostapd_cleanup().
619 */
620static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
621{
622 struct hostapd_bss_config *conf = hapd->conf;
623 u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
624 int ssid_len, set_ssid;
625 char force_ifname[IFNAMSIZ];
626 u8 if_addr[ETH_ALEN];
627
628 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)",
629 __func__, hapd, hapd->conf->iface, first);
630
631 if (hapd->started) {
632 wpa_printf(MSG_ERROR, "%s: Interface %s was already started",
633 __func__, hapd->conf->iface);
634 return -1;
635 }
636 hapd->started = 1;
637
638 if (!first || first == -1) {
639 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
640 /* Allocate the next available BSSID. */
641 do {
642 inc_byte_array(hapd->own_addr, ETH_ALEN);
643 } while (mac_in_conf(hapd->iconf, hapd->own_addr));
644 } else {
645 /* Allocate the configured BSSID. */
646 os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
647
648 if (hostapd_mac_comp(hapd->own_addr,
649 hapd->iface->bss[0]->own_addr) ==
650 0) {
651 wpa_printf(MSG_ERROR, "BSS '%s' may not have "
652 "BSSID set to the MAC address of "
653 "the radio", hapd->conf->iface);
654 return -1;
655 }
656 }
657
658 hapd->interface_added = 1;
659 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
660 hapd->conf->iface, hapd->own_addr, hapd,
661 &hapd->drv_priv, force_ifname, if_addr,
662 hapd->conf->bridge[0] ? hapd->conf->bridge :
663 NULL, first == -1)) {
664 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
665 MACSTR ")", MAC2STR(hapd->own_addr));
666 hapd->interface_added = 0;
667 return -1;
668 }
669 }
670
671 if (conf->wmm_enabled < 0)
672 conf->wmm_enabled = hapd->iconf->ieee80211n;
673
674 hostapd_flush_old_stations(hapd, WLAN_REASON_PREV_AUTH_NOT_VALID);
675 hostapd_set_privacy(hapd, 0);
676
677 hostapd_broadcast_wep_clear(hapd);
678 if (hostapd_setup_encryption(hapd->conf->iface, hapd))
679 return -1;
680
681 /*
682 * Fetch the SSID from the system and use it or,
683 * if one was specified in the config file, verify they
684 * match.
685 */
686 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
687 if (ssid_len < 0) {
688 wpa_printf(MSG_ERROR, "Could not read SSID from system");
689 return -1;
690 }
691 if (conf->ssid.ssid_set) {
692 /*
693 * If SSID is specified in the config file and it differs
694 * from what is being used then force installation of the
695 * new SSID.
696 */
697 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
698 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
699 } else {
700 /*
701 * No SSID in the config file; just use the one we got
702 * from the system.
703 */
704 set_ssid = 0;
705 conf->ssid.ssid_len = ssid_len;
706 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
707 }
708
709 if (!hostapd_drv_none(hapd)) {
710 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
711 " and ssid \"%s\"",
712 hapd->conf->iface, MAC2STR(hapd->own_addr),
713 wpa_ssid_txt(hapd->conf->ssid.ssid,
714 hapd->conf->ssid.ssid_len));
715 }
716
717 if (hostapd_setup_wpa_psk(conf)) {
718 wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
719 return -1;
720 }
721
722 /* Set SSID for the kernel driver (to be used in beacon and probe
723 * response frames) */
724 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
725 conf->ssid.ssid_len)) {
726 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
727 return -1;
728 }
729
730 if (wpa_debug_level == MSG_MSGDUMP)
731 conf->radius->msg_dumps = 1;
732#ifndef CONFIG_NO_RADIUS
733 hapd->radius = radius_client_init(hapd, conf->radius);
734 if (hapd->radius == NULL) {
735 wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
736 return -1;
737 }
738
739 if (hapd->conf->radius_das_port) {
740 struct radius_das_conf das_conf;
741 os_memset(&das_conf, 0, sizeof(das_conf));
742 das_conf.port = hapd->conf->radius_das_port;
743 das_conf.shared_secret = hapd->conf->radius_das_shared_secret;
744 das_conf.shared_secret_len =
745 hapd->conf->radius_das_shared_secret_len;
746 das_conf.client_addr = &hapd->conf->radius_das_client_addr;
747 das_conf.time_window = hapd->conf->radius_das_time_window;
748 das_conf.require_event_timestamp =
749 hapd->conf->radius_das_require_event_timestamp;
750 das_conf.ctx = hapd;
751 das_conf.disconnect = hostapd_das_disconnect;
752 hapd->radius_das = radius_das_init(&das_conf);
753 if (hapd->radius_das == NULL) {
754 wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
755 "failed.");
756 return -1;
757 }
758 }
759#endif /* CONFIG_NO_RADIUS */
760
761 if (hostapd_acl_init(hapd)) {
762 wpa_printf(MSG_ERROR, "ACL initialization failed.");
763 return -1;
764 }
765 if (hostapd_init_wps(hapd, conf))
766 return -1;
767
768 if (authsrv_init(hapd) < 0)
769 return -1;
770
771 if (ieee802_1x_init(hapd)) {
772 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
773 return -1;
774 }
775
776 if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
777 return -1;
778
779 if (accounting_init(hapd)) {
780 wpa_printf(MSG_ERROR, "Accounting initialization failed.");
781 return -1;
782 }
783
784 if (hapd->conf->ieee802_11f &&
785 (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
786 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
787 "failed.");
788 return -1;
789 }
790
791#ifdef CONFIG_INTERWORKING
792 if (gas_serv_init(hapd)) {
793 wpa_printf(MSG_ERROR, "GAS server initialization failed");
794 return -1;
795 }
796
797 if (conf->qos_map_set_len &&
798 hostapd_drv_set_qos_map(hapd, conf->qos_map_set,
799 conf->qos_map_set_len)) {
800 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map");
801 return -1;
802 }
803#endif /* CONFIG_INTERWORKING */
804
805 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
806 wpa_printf(MSG_ERROR, "VLAN initialization failed.");
807 return -1;
808 }
809
810 if (!hapd->conf->start_disabled && ieee802_11_set_beacon(hapd) < 0)
811 return -1;
812
813 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
814 return -1;
815
816 if (hapd->driver && hapd->driver->set_operstate)
817 hapd->driver->set_operstate(hapd->drv_priv, 1);
818
819 return 0;
820}
821
822
823static void hostapd_tx_queue_params(struct hostapd_iface *iface)
824{
825 struct hostapd_data *hapd = iface->bss[0];
826 int i;
827 struct hostapd_tx_queue_params *p;
828
829 for (i = 0; i < NUM_TX_QUEUES; i++) {
830 p = &iface->conf->tx_queue[i];
831
832 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
833 p->cwmax, p->burst)) {
834 wpa_printf(MSG_DEBUG, "Failed to set TX queue "
835 "parameters for queue %d.", i);
836 /* Continue anyway */
837 }
838 }
839}
840
841
842static int hostapd_set_acl_list(struct hostapd_data *hapd,
843 struct mac_acl_entry *mac_acl,
844 int n_entries, u8 accept_acl)
845{
846 struct hostapd_acl_params *acl_params;
847 int i, err;
848
849 acl_params = os_zalloc(sizeof(*acl_params) +
850 (n_entries * sizeof(acl_params->mac_acl[0])));
851 if (!acl_params)
852 return -ENOMEM;
853
854 for (i = 0; i < n_entries; i++)
855 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr,
856 ETH_ALEN);
857
858 acl_params->acl_policy = accept_acl;
859 acl_params->num_mac_acl = n_entries;
860
861 err = hostapd_drv_set_acl(hapd, acl_params);
862
863 os_free(acl_params);
864
865 return err;
866}
867
868
869static void hostapd_set_acl(struct hostapd_data *hapd)
870{
871 struct hostapd_config *conf = hapd->iconf;
872 int err;
873 u8 accept_acl;
874
875 if (hapd->iface->drv_max_acl_mac_addrs == 0)
876 return;
877 if (!(conf->bss[0]->num_accept_mac || conf->bss[0]->num_deny_mac))
878 return;
879
880 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) {
881 if (conf->bss[0]->num_accept_mac) {
882 accept_acl = 1;
883 err = hostapd_set_acl_list(hapd,
884 conf->bss[0]->accept_mac,
885 conf->bss[0]->num_accept_mac,
886 accept_acl);
887 if (err) {
888 wpa_printf(MSG_DEBUG, "Failed to set accept acl");
889 return;
890 }
891 } else {
892 wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
893 }
894 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) {
895 if (conf->bss[0]->num_deny_mac) {
896 accept_acl = 0;
897 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac,
898 conf->bss[0]->num_deny_mac,
899 accept_acl);
900 if (err) {
901 wpa_printf(MSG_DEBUG, "Failed to set deny acl");
902 return;
903 }
904 } else {
905 wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file");
906 }
907 }
908}
909
910
911static int start_ctrl_iface_bss(struct hostapd_data *hapd)
912{
913 if (!hapd->iface->interfaces ||
914 !hapd->iface->interfaces->ctrl_iface_init)
915 return 0;
916
917 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) {
918 wpa_printf(MSG_ERROR,
919 "Failed to setup control interface for %s",
920 hapd->conf->iface);
921 return -1;
922 }
923
924 return 0;
925}
926
927
928static int start_ctrl_iface(struct hostapd_iface *iface)
929{
930 size_t i;
931
932 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init)
933 return 0;
934
935 for (i = 0; i < iface->num_bss; i++) {
936 struct hostapd_data *hapd = iface->bss[i];
937 if (iface->interfaces->ctrl_iface_init(hapd)) {
938 wpa_printf(MSG_ERROR,
939 "Failed to setup control interface for %s",
940 hapd->conf->iface);
941 return -1;
942 }
943 }
944
945 return 0;
946}
947
948
949static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx)
950{
951 struct hostapd_iface *iface = eloop_ctx;
952
953 if (!iface->wait_channel_update) {
954 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it");
955 return;
956 }
957
958 /*
959 * It is possible that the existing channel list is acceptable, so try
960 * to proceed.
961 */
962 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway");
963 setup_interface2(iface);
964}
965
966
967void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator)
968{
969 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER)
970 return;
971
972 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup");
973 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
974 setup_interface2(iface);
975}
976
977
978static int setup_interface(struct hostapd_iface *iface)
979{
980 struct hostapd_data *hapd = iface->bss[0];
981 size_t i;
982
983 if (!iface->phy[0]) {
984 const char *phy = hostapd_drv_get_radio_name(hapd);
985 if (phy) {
986 wpa_printf(MSG_DEBUG, "phy: %s", phy);
987 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
988 }
989 }
990
991 /*
992 * Make sure that all BSSes get configured with a pointer to the same
993 * driver interface.
994 */
995 for (i = 1; i < iface->num_bss; i++) {
996 iface->bss[i]->driver = hapd->driver;
997 iface->bss[i]->drv_priv = hapd->drv_priv;
998 }
999
1000 if (hostapd_validate_bssid_configuration(iface))
1001 return -1;
1002
1003 /*
1004 * Initialize control interfaces early to allow external monitoring of
1005 * channel setup operations that may take considerable amount of time
1006 * especially for DFS cases.
1007 */
1008 if (start_ctrl_iface(iface))
1009 return -1;
1010
1011 if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
1012 char country[4], previous_country[4];
1013
1014 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE);
1015 if (hostapd_get_country(hapd, previous_country) < 0)
1016 previous_country[0] = '\0';
1017
1018 os_memcpy(country, hapd->iconf->country, 3);
1019 country[3] = '\0';
1020 if (hostapd_set_country(hapd, country) < 0) {
1021 wpa_printf(MSG_ERROR, "Failed to set country code");
1022 return -1;
1023 }
1024
1025 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s",
1026 previous_country, country);
1027
1028 if (os_strncmp(previous_country, country, 2) != 0) {
1029 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update");
1030 iface->wait_channel_update = 1;
1031 eloop_register_timeout(5, 0,
1032 channel_list_update_timeout,
1033 iface, NULL);
1034 return 0;
1035 }
1036 }
1037
1038 return setup_interface2(iface);
1039}
1040
1041
1042static int setup_interface2(struct hostapd_iface *iface)
1043{
1044 iface->wait_channel_update = 0;
1045
1046 if (hostapd_get_hw_features(iface)) {
1047 /* Not all drivers support this yet, so continue without hw
1048 * feature data. */
1049 } else {
1050 int ret = hostapd_select_hw_mode(iface);
1051 if (ret < 0) {
1052 wpa_printf(MSG_ERROR, "Could not select hw_mode and "
1053 "channel. (%d)", ret);
1054 return -1;
1055 }
1056 if (ret == 1) {
1057 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)");
1058 return 0;
1059 }
1060 ret = hostapd_check_ht_capab(iface);
1061 if (ret < 0)
1062 return -1;
1063 if (ret == 1) {
1064 wpa_printf(MSG_DEBUG, "Interface initialization will "
1065 "be completed in a callback");
1066 return 0;
1067 }
1068
1069 if (iface->conf->ieee80211h)
1070 wpa_printf(MSG_DEBUG, "DFS support is enabled");
1071 }
1072 return hostapd_setup_interface_complete(iface, 0);
1073}
1074
1075
1076/**
1077 * hostapd_setup_interface_complete - Complete interface setup
1078 *
1079 * This function is called when previous steps in the interface setup has been
1080 * completed. This can also start operations, e.g., DFS, that will require
1081 * additional processing before interface is ready to be enabled. Such
1082 * operations will call this function from eloop callbacks when finished.
1083 */
1084int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
1085{
1086 struct hostapd_data *hapd = iface->bss[0];
1087 size_t j;
1088 u8 *prev_addr;
1089
1090 if (err) {
1091 wpa_printf(MSG_ERROR, "Interface initialization failed");
1092 hostapd_set_state(iface, HAPD_IFACE_DISABLED);
1093 if (iface->interfaces && iface->interfaces->terminate_on_error)
1094 eloop_terminate();
1095 return -1;
1096 }
1097
1098 wpa_printf(MSG_DEBUG, "Completing interface initialization");
1099 if (iface->conf->channel) {
1100#ifdef NEED_AP_MLME
1101 int res;
1102#endif /* NEED_AP_MLME */
1103
1104 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel);
1105 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d "
1106 "Frequency: %d MHz",
1107 hostapd_hw_mode_txt(iface->conf->hw_mode),
1108 iface->conf->channel, iface->freq);
1109
1110#ifdef NEED_AP_MLME
1111 /* Check DFS */
1112 res = hostapd_handle_dfs(iface);
1113 if (res <= 0)
1114 return res;
1115#endif /* NEED_AP_MLME */
1116
1117 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
1118 hapd->iconf->channel,
1119 hapd->iconf->ieee80211n,
1120 hapd->iconf->ieee80211ac,
1121 hapd->iconf->secondary_channel,
1122 hapd->iconf->vht_oper_chwidth,
1123 hapd->iconf->vht_oper_centr_freq_seg0_idx,
1124 hapd->iconf->vht_oper_centr_freq_seg1_idx)) {
1125 wpa_printf(MSG_ERROR, "Could not set channel for "
1126 "kernel driver");
1127 return -1;
1128 }
1129 }
1130
1131 if (iface->current_mode) {
1132 if (hostapd_prepare_rates(iface, iface->current_mode)) {
1133 wpa_printf(MSG_ERROR, "Failed to prepare rates "
1134 "table.");
1135 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
1136 HOSTAPD_LEVEL_WARNING,
1137 "Failed to prepare rates table.");
1138 return -1;
1139 }
1140 }
1141
1142 if (hapd->iconf->rts_threshold > -1 &&
1143 hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
1144 wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
1145 "kernel driver");
1146 return -1;
1147 }
1148
1149 if (hapd->iconf->fragm_threshold > -1 &&
1150 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
1151 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
1152 "for kernel driver");
1153 return -1;
1154 }
1155
1156 prev_addr = hapd->own_addr;
1157
1158 for (j = 0; j < iface->num_bss; j++) {
1159 hapd = iface->bss[j];
1160 if (j)
1161 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
1162 if (hostapd_setup_bss(hapd, j == 0))
1163 return -1;
1164 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
1165 prev_addr = hapd->own_addr;
1166 }
1167 hapd = iface->bss[0];
1168
1169 hostapd_tx_queue_params(iface);
1170
1171 ap_list_init(iface);
1172
1173 hostapd_set_acl(hapd);
1174
1175 if (hostapd_driver_commit(hapd) < 0) {
1176 wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
1177 "configuration", __func__);
1178 return -1;
1179 }
1180
1181 /*
1182 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
1183 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
1184 * mode), the interface is up only after driver_commit, so initialize
1185 * WPS after driver_commit.
1186 */
1187 for (j = 0; j < iface->num_bss; j++) {
1188 if (hostapd_init_wps_complete(iface->bss[j]))
1189 return -1;
1190 }
1191
1192 hostapd_set_state(iface, HAPD_IFACE_ENABLED);
1193 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED);
1194 if (hapd->setup_complete_cb)
1195 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
1196
1197 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
1198 iface->bss[0]->conf->iface);
1199 if (iface->interfaces && iface->interfaces->terminate_on_error > 0)
1200 iface->interfaces->terminate_on_error--;
1201
1202 return 0;
1203}
1204
1205
1206/**
1207 * hostapd_setup_interface - Setup of an interface
1208 * @iface: Pointer to interface data.
1209 * Returns: 0 on success, -1 on failure
1210 *
1211 * Initializes the driver interface, validates the configuration,
1212 * and sets driver parameters based on the configuration.
1213 * Flushes old stations, sets the channel, encryption,
1214 * beacons, and WDS links based on the configuration.
1215 *
1216 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS,
1217 * or DFS operations, this function returns 0 before such operations have been
1218 * completed. The pending operations are registered into eloop and will be
1219 * completed from eloop callbacks. Those callbacks end up calling
1220 * hostapd_setup_interface_complete() once setup has been completed.
1221 */
1222int hostapd_setup_interface(struct hostapd_iface *iface)
1223{
1224 int ret;
1225
1226 ret = setup_interface(iface);
1227 if (ret) {
1228 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
1229 iface->bss[0]->conf->iface);
1230 return -1;
1231 }
1232
1233 return 0;
1234}
1235
1236
1237/**
1238 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
1239 * @hapd_iface: Pointer to interface data
1240 * @conf: Pointer to per-interface configuration
1241 * @bss: Pointer to per-BSS configuration for this BSS
1242 * Returns: Pointer to allocated BSS data
1243 *
1244 * This function is used to allocate per-BSS data structure. This data will be
1245 * freed after hostapd_cleanup() is called for it during interface
1246 * deinitialization.
1247 */
1248struct hostapd_data *
1249hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1250 struct hostapd_config *conf,
1251 struct hostapd_bss_config *bss)
1252{
1253 struct hostapd_data *hapd;
1254
1255 hapd = os_zalloc(sizeof(*hapd));
1256 if (hapd == NULL)
1257 return NULL;
1258
1259 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1260 hapd->iconf = conf;
1261 hapd->conf = bss;
1262 hapd->iface = hapd_iface;
1263 hapd->driver = hapd->iconf->driver;
1264 hapd->ctrl_sock = -1;
1265
1266 return hapd;
1267}
1268
1269
1270static void hostapd_bss_deinit(struct hostapd_data *hapd)
1271{
1272 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__,
1273 hapd->conf->iface);
1274 hostapd_free_stas(hapd);
1275 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1276 hostapd_clear_wep(hapd);
1277 hostapd_cleanup(hapd);
1278}
1279
1280
1281void hostapd_interface_deinit(struct hostapd_iface *iface)
1282{
1283 int j;
1284
1285 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1286 if (iface == NULL)
1287 return;
1288
1289 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL);
1290 iface->wait_channel_update = 0;
1291
1292 for (j = iface->num_bss - 1; j >= 0; j--)
1293 hostapd_bss_deinit(iface->bss[j]);
1294}
1295
1296
1297void hostapd_interface_free(struct hostapd_iface *iface)
1298{
1299 size_t j;
1300 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1301 for (j = 0; j < iface->num_bss; j++) {
1302 wpa_printf(MSG_DEBUG, "%s: free hapd %p",
1303 __func__, iface->bss[j]);
1304 os_free(iface->bss[j]);
1305 }
1306 hostapd_cleanup_iface(iface);
1307}
1308
1309
1310/**
1311 * hostapd_init - Allocate and initialize per-interface data
1312 * @config_file: Path to the configuration file
1313 * Returns: Pointer to the allocated interface data or %NULL on failure
1314 *
1315 * This function is used to allocate main data structures for per-interface
1316 * data. The allocated data buffer will be freed by calling
1317 * hostapd_cleanup_iface().
1318 */
1319struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces,
1320 const char *config_file)
1321{
1322 struct hostapd_iface *hapd_iface = NULL;
1323 struct hostapd_config *conf = NULL;
1324 struct hostapd_data *hapd;
1325 size_t i;
1326
1327 hapd_iface = os_zalloc(sizeof(*hapd_iface));
1328 if (hapd_iface == NULL)
1329 goto fail;
1330
1331 hapd_iface->config_fname = os_strdup(config_file);
1332 if (hapd_iface->config_fname == NULL)
1333 goto fail;
1334
1335 conf = interfaces->config_read_cb(hapd_iface->config_fname);
1336 if (conf == NULL)
1337 goto fail;
1338 hapd_iface->conf = conf;
1339
1340 hapd_iface->num_bss = conf->num_bss;
1341 hapd_iface->bss = os_calloc(conf->num_bss,
1342 sizeof(struct hostapd_data *));
1343 if (hapd_iface->bss == NULL)
1344 goto fail;
1345
1346 for (i = 0; i < conf->num_bss; i++) {
1347 hapd = hapd_iface->bss[i] =
1348 hostapd_alloc_bss_data(hapd_iface, conf,
1349 conf->bss[i]);
1350 if (hapd == NULL)
1351 goto fail;
1352 hapd->msg_ctx = hapd;
1353 }
1354
1355 return hapd_iface;
1356
1357fail:
1358 wpa_printf(MSG_ERROR, "Failed to set up interface with %s",
1359 config_file);
1360 if (conf)
1361 hostapd_config_free(conf);
1362 if (hapd_iface) {
1363 os_free(hapd_iface->config_fname);
1364 os_free(hapd_iface->bss);
1365 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1366 __func__, hapd_iface);
1367 os_free(hapd_iface);
1368 }
1369 return NULL;
1370}
1371
1372
1373static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname)
1374{
1375 size_t i, j;
1376
1377 for (i = 0; i < interfaces->count; i++) {
1378 struct hostapd_iface *iface = interfaces->iface[i];
1379 for (j = 0; j < iface->num_bss; j++) {
1380 struct hostapd_data *hapd = iface->bss[j];
1381 if (os_strcmp(ifname, hapd->conf->iface) == 0)
1382 return 1;
1383 }
1384 }
1385
1386 return 0;
1387}
1388
1389
1390/**
1391 * hostapd_interface_init_bss - Read configuration file and init BSS data
1392 *
1393 * This function is used to parse configuration file for a BSS. This BSS is
1394 * added to an existing interface sharing the same radio (if any) or a new
1395 * interface is created if this is the first interface on a radio. This
1396 * allocate memory for the BSS. No actual driver operations are started.
1397 *
1398 * This is similar to hostapd_interface_init(), but for a case where the
1399 * configuration is used to add a single BSS instead of all BSSes for a radio.
1400 */
1401struct hostapd_iface *
1402hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy,
1403 const char *config_fname, int debug)
1404{
1405 struct hostapd_iface *new_iface = NULL, *iface = NULL;
1406 struct hostapd_data *hapd;
1407 int k;
1408 size_t i, bss_idx;
1409
1410 if (!phy || !*phy)
1411 return NULL;
1412
1413 for (i = 0; i < interfaces->count; i++) {
1414 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) {
1415 iface = interfaces->iface[i];
1416 break;
1417 }
1418 }
1419
1420 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s",
1421 config_fname, phy, iface ? "" : " --> new PHY");
1422 if (iface) {
1423 struct hostapd_config *conf;
1424 struct hostapd_bss_config **tmp_conf;
1425 struct hostapd_data **tmp_bss;
1426 struct hostapd_bss_config *bss;
1427 const char *ifname;
1428
1429 /* Add new BSS to existing iface */
1430 conf = interfaces->config_read_cb(config_fname);
1431 if (conf == NULL)
1432 return NULL;
1433 if (conf->num_bss > 1) {
1434 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config");
1435 hostapd_config_free(conf);
1436 return NULL;
1437 }
1438
1439 ifname = conf->bss[0]->iface;
1440 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) {
1441 wpa_printf(MSG_ERROR,
1442 "Interface name %s already in use", ifname);
1443 hostapd_config_free(conf);
1444 return NULL;
1445 }
1446
1447 tmp_conf = os_realloc_array(
1448 iface->conf->bss, iface->conf->num_bss + 1,
1449 sizeof(struct hostapd_bss_config *));
1450 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1,
1451 sizeof(struct hostapd_data *));
1452 if (tmp_bss)
1453 iface->bss = tmp_bss;
1454 if (tmp_conf) {
1455 iface->conf->bss = tmp_conf;
1456 iface->conf->last_bss = tmp_conf[0];
1457 }
1458 if (tmp_bss == NULL || tmp_conf == NULL) {
1459 hostapd_config_free(conf);
1460 return NULL;
1461 }
1462 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0];
1463 iface->conf->num_bss++;
1464
1465 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss);
1466 if (hapd == NULL) {
1467 iface->conf->num_bss--;
1468 hostapd_config_free(conf);
1469 return NULL;
1470 }
1471 iface->conf->last_bss = bss;
1472 iface->bss[iface->num_bss] = hapd;
1473 hapd->msg_ctx = hapd;
1474
1475 bss_idx = iface->num_bss++;
1476 conf->num_bss--;
1477 conf->bss[0] = NULL;
1478 hostapd_config_free(conf);
1479 } else {
1480 /* Add a new iface with the first BSS */
1481 new_iface = iface = hostapd_init(interfaces, config_fname);
1482 if (!iface)
1483 return NULL;
1484 os_strlcpy(iface->phy, phy, sizeof(iface->phy));
1485 iface->interfaces = interfaces;
1486 bss_idx = 0;
1487 }
1488
1489 for (k = 0; k < debug; k++) {
1490 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0)
1491 iface->bss[bss_idx]->conf->logger_stdout_level--;
1492 }
1493
1494 if (iface->conf->bss[bss_idx]->iface[0] == '\0' &&
1495 !hostapd_drv_none(iface->bss[bss_idx])) {
1496 wpa_printf(MSG_ERROR, "Interface name not specified in %s",
1497 config_fname);
1498 if (new_iface)
1499 hostapd_interface_deinit_free(new_iface);
1500 return NULL;
1501 }
1502
1503 return iface;
1504}
1505
1506
1507void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1508{
1509 const struct wpa_driver_ops *driver;
1510 void *drv_priv;
1511
1512 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface);
1513 if (iface == NULL)
1514 return;
1515 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u",
1516 __func__, (unsigned int) iface->num_bss,
1517 (unsigned int) iface->conf->num_bss);
1518 driver = iface->bss[0]->driver;
1519 drv_priv = iface->bss[0]->drv_priv;
1520 hostapd_interface_deinit(iface);
1521 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1522 __func__, driver, drv_priv);
1523 if (driver && driver->hapd_deinit && drv_priv)
1524 driver->hapd_deinit(drv_priv);
1525 hostapd_interface_free(iface);
1526}
1527
1528
1529int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1530{
1531 if (hapd_iface->bss[0]->drv_priv != NULL) {
1532 wpa_printf(MSG_ERROR, "Interface %s already enabled",
1533 hapd_iface->conf->bss[0]->iface);
1534 return -1;
1535 }
1536
1537 wpa_printf(MSG_DEBUG, "Enable interface %s",
1538 hapd_iface->conf->bss[0]->iface);
1539
1540 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1541 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable");
1542 return -1;
1543 }
1544
1545 if (hapd_iface->interfaces == NULL ||
1546 hapd_iface->interfaces->driver_init == NULL ||
1547 hapd_iface->interfaces->driver_init(hapd_iface))
1548 return -1;
1549
1550 if (hostapd_setup_interface(hapd_iface)) {
1551 const struct wpa_driver_ops *driver;
1552 void *drv_priv;
1553
1554 driver = hapd_iface->bss[0]->driver;
1555 drv_priv = hapd_iface->bss[0]->drv_priv;
1556 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1557 __func__, driver, drv_priv);
1558 if (driver && driver->hapd_deinit && drv_priv) {
1559 driver->hapd_deinit(drv_priv);
1560 hapd_iface->bss[0]->drv_priv = NULL;
1561 }
1562 return -1;
1563 }
1564
1565 return 0;
1566}
1567
1568
1569int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1570{
1571 size_t j;
1572
1573 wpa_printf(MSG_DEBUG, "Reload interface %s",
1574 hapd_iface->conf->bss[0]->iface);
1575 for (j = 0; j < hapd_iface->num_bss; j++)
1576 hostapd_set_security_params(hapd_iface->conf->bss[j]);
1577 if (hostapd_config_check(hapd_iface->conf, 1) < 0) {
1578 wpa_printf(MSG_ERROR, "Updated configuration is invalid");
1579 return -1;
1580 }
1581 hostapd_clear_old(hapd_iface);
1582 for (j = 0; j < hapd_iface->num_bss; j++)
1583 hostapd_reload_bss(hapd_iface->bss[j]);
1584
1585 return 0;
1586}
1587
1588
1589int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1590{
1591 size_t j;
1592 const struct wpa_driver_ops *driver;
1593 void *drv_priv;
1594
1595 if (hapd_iface == NULL)
1596 return -1;
1597 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED);
1598 driver = hapd_iface->bss[0]->driver;
1599 drv_priv = hapd_iface->bss[0]->drv_priv;
1600
1601 /* whatever hostapd_interface_deinit does */
1602 for (j = 0; j < hapd_iface->num_bss; j++) {
1603 struct hostapd_data *hapd = hapd_iface->bss[j];
1604 hostapd_free_stas(hapd);
1605 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1606 hostapd_clear_wep(hapd);
1607 hostapd_free_hapd_data(hapd);
1608 }
1609
1610 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit",
1611 __func__, driver, drv_priv);
1612 if (driver && driver->hapd_deinit && drv_priv) {
1613 driver->hapd_deinit(drv_priv);
1614 hapd_iface->bss[0]->drv_priv = NULL;
1615 }
1616
1617 /* From hostapd_cleanup_iface: These were initialized in
1618 * hostapd_setup_interface and hostapd_setup_interface_complete
1619 */
1620 hostapd_cleanup_iface_partial(hapd_iface);
1621
1622 wpa_printf(MSG_DEBUG, "Interface %s disabled",
1623 hapd_iface->bss[0]->conf->iface);
1624 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED);
1625 return 0;
1626}
1627
1628
1629static struct hostapd_iface *
1630hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1631{
1632 struct hostapd_iface **iface, *hapd_iface;
1633
1634 iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1635 sizeof(struct hostapd_iface *));
1636 if (iface == NULL)
1637 return NULL;
1638 interfaces->iface = iface;
1639 hapd_iface = interfaces->iface[interfaces->count] =
1640 os_zalloc(sizeof(*hapd_iface));
1641 if (hapd_iface == NULL) {
1642 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1643 "the interface", __func__);
1644 return NULL;
1645 }
1646 interfaces->count++;
1647 hapd_iface->interfaces = interfaces;
1648
1649 return hapd_iface;
1650}
1651
1652
1653static struct hostapd_config *
1654hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1655 const char *ctrl_iface)
1656{
1657 struct hostapd_bss_config *bss;
1658 struct hostapd_config *conf;
1659
1660 /* Allocates memory for bss and conf */
1661 conf = hostapd_config_defaults();
1662 if (conf == NULL) {
1663 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1664 "configuration", __func__);
1665 return NULL;
1666 }
1667
1668 conf->driver = wpa_drivers[0];
1669 if (conf->driver == NULL) {
1670 wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1671 hostapd_config_free(conf);
1672 return NULL;
1673 }
1674
1675 bss = conf->last_bss = conf->bss[0];
1676
1677 os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1678 bss->ctrl_interface = os_strdup(ctrl_iface);
1679 if (bss->ctrl_interface == NULL) {
1680 hostapd_config_free(conf);
1681 return NULL;
1682 }
1683
1684 /* Reading configuration file skipped, will be done in SET!
1685 * From reading the configuration till the end has to be done in
1686 * SET
1687 */
1688 return conf;
1689}
1690
1691
1692static struct hostapd_iface * hostapd_data_alloc(
1693 struct hapd_interfaces *interfaces, struct hostapd_config *conf)
1694{
1695 size_t i;
1696 struct hostapd_iface *hapd_iface =
1697 interfaces->iface[interfaces->count - 1];
1698 struct hostapd_data *hapd;
1699
1700 hapd_iface->conf = conf;
1701 hapd_iface->num_bss = conf->num_bss;
1702
1703 hapd_iface->bss = os_zalloc(conf->num_bss *
1704 sizeof(struct hostapd_data *));
1705 if (hapd_iface->bss == NULL)
1706 return NULL;
1707
1708 for (i = 0; i < conf->num_bss; i++) {
1709 hapd = hapd_iface->bss[i] =
1710 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]);
1711 if (hapd == NULL)
1712 return NULL;
1713 hapd->msg_ctx = hapd;
1714 }
1715
1716 hapd_iface->interfaces = interfaces;
1717
1718 return hapd_iface;
1719}
1720
1721
1722int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1723{
1724 struct hostapd_config *conf = NULL;
1725 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL;
1726 struct hostapd_data *hapd;
1727 char *ptr;
1728 size_t i, j;
1729 const char *conf_file = NULL, *phy_name = NULL;
1730
1731 if (os_strncmp(buf, "bss_config=", 11) == 0) {
1732 char *pos;
1733 phy_name = buf + 11;
1734 pos = os_strchr(phy_name, ':');
1735 if (!pos)
1736 return -1;
1737 *pos++ = '\0';
1738 conf_file = pos;
1739 if (!os_strlen(conf_file))
1740 return -1;
1741
1742 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name,
1743 conf_file, 0);
1744 if (!hapd_iface)
1745 return -1;
1746 for (j = 0; j < interfaces->count; j++) {
1747 if (interfaces->iface[j] == hapd_iface)
1748 break;
1749 }
1750 if (j == interfaces->count) {
1751 struct hostapd_iface **tmp;
1752 tmp = os_realloc_array(interfaces->iface,
1753 interfaces->count + 1,
1754 sizeof(struct hostapd_iface *));
1755 if (!tmp) {
1756 hostapd_interface_deinit_free(hapd_iface);
1757 return -1;
1758 }
1759 interfaces->iface = tmp;
1760 interfaces->iface[interfaces->count++] = hapd_iface;
1761 new_iface = hapd_iface;
1762 }
1763
1764 if (new_iface) {
1765 if (interfaces->driver_init(hapd_iface) ||
1766 hostapd_setup_interface(hapd_iface)) {
1767 interfaces->count--;
1768 goto fail;
1769 }
1770 } else {
1771 /* Assign new BSS with bss[0]'s driver info */
1772 hapd = hapd_iface->bss[hapd_iface->num_bss - 1];
1773 hapd->driver = hapd_iface->bss[0]->driver;
1774 hapd->drv_priv = hapd_iface->bss[0]->drv_priv;
1775 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr,
1776 ETH_ALEN);
1777
1778 if (start_ctrl_iface_bss(hapd) < 0 ||
1779 (hapd_iface->state == HAPD_IFACE_ENABLED &&
1780 hostapd_setup_bss(hapd, -1))) {
1781 hapd_iface->conf->num_bss--;
1782 hapd_iface->num_bss--;
1783 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
1784 __func__, hapd, hapd->conf->iface);
1785 os_free(hapd);
1786 return -1;
1787 }
1788 }
1789 return 0;
1790 }
1791
1792 ptr = os_strchr(buf, ' ');
1793 if (ptr == NULL)
1794 return -1;
1795 *ptr++ = '\0';
1796
1797 if (os_strncmp(ptr, "config=", 7) == 0)
1798 conf_file = ptr + 7;
1799
1800 for (i = 0; i < interfaces->count; i++) {
1801 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface,
1802 buf)) {
1803 wpa_printf(MSG_INFO, "Cannot add interface - it "
1804 "already exists");
1805 return -1;
1806 }
1807 }
1808
1809 hapd_iface = hostapd_iface_alloc(interfaces);
1810 if (hapd_iface == NULL) {
1811 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1812 "for interface", __func__);
1813 goto fail;
1814 }
1815
1816 if (conf_file && interfaces->config_read_cb) {
1817 conf = interfaces->config_read_cb(conf_file);
1818 if (conf && conf->bss)
1819 os_strlcpy(conf->bss[0]->iface, buf,
1820 sizeof(conf->bss[0]->iface));
1821 } else
1822 conf = hostapd_config_alloc(interfaces, buf, ptr);
1823 if (conf == NULL || conf->bss == NULL) {
1824 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1825 "for configuration", __func__);
1826 goto fail;
1827 }
1828
1829 hapd_iface = hostapd_data_alloc(interfaces, conf);
1830 if (hapd_iface == NULL) {
1831 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1832 "for hostapd", __func__);
1833 goto fail;
1834 }
1835
1836 if (start_ctrl_iface(hapd_iface) < 0)
1837 goto fail;
1838
1839 wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface);
1840
1841 return 0;
1842
1843fail:
1844 if (conf)
1845 hostapd_config_free(conf);
1846 if (hapd_iface) {
1847 if (hapd_iface->bss) {
1848 for (i = 0; i < hapd_iface->num_bss; i++) {
1849 hapd = hapd_iface->bss[i];
1850 if (hapd && hapd_iface->interfaces &&
1851 hapd_iface->interfaces->ctrl_iface_deinit)
1852 hapd_iface->interfaces->
1853 ctrl_iface_deinit(hapd);
1854 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1855 __func__, hapd_iface->bss[i],
1856 hapd_iface->bss[i]->conf->iface);
1857 os_free(hapd_iface->bss[i]);
1858 }
1859 os_free(hapd_iface->bss);
1860 }
1861 wpa_printf(MSG_DEBUG, "%s: free iface %p",
1862 __func__, hapd_iface);
1863 os_free(hapd_iface);
1864 }
1865 return -1;
1866}
1867
1868
1869static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx)
1870{
1871 size_t i;
1872
1873 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface);
1874
1875 /* Remove hostapd_data only if it has already been initialized */
1876 if (idx < iface->num_bss) {
1877 struct hostapd_data *hapd = iface->bss[idx];
1878
1879 hostapd_bss_deinit(hapd);
1880 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
1881 __func__, hapd, hapd->conf->iface);
1882 hostapd_config_free_bss(hapd->conf);
1883 os_free(hapd);
1884
1885 iface->num_bss--;
1886
1887 for (i = idx; i < iface->num_bss; i++)
1888 iface->bss[i] = iface->bss[i + 1];
1889 } else {
1890 hostapd_config_free_bss(iface->conf->bss[idx]);
1891 iface->conf->bss[idx] = NULL;
1892 }
1893
1894 iface->conf->num_bss--;
1895 for (i = idx; i < iface->conf->num_bss; i++)
1896 iface->conf->bss[i] = iface->conf->bss[i + 1];
1897
1898 return 0;
1899}
1900
1901
1902int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
1903{
1904 struct hostapd_iface *hapd_iface;
1905 size_t i, j, k = 0;
1906
1907 for (i = 0; i < interfaces->count; i++) {
1908 hapd_iface = interfaces->iface[i];
1909 if (hapd_iface == NULL)
1910 return -1;
1911 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) {
1912 wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
1913 hostapd_interface_deinit_free(hapd_iface);
1914 k = i;
1915 while (k < (interfaces->count - 1)) {
1916 interfaces->iface[k] =
1917 interfaces->iface[k + 1];
1918 k++;
1919 }
1920 interfaces->count--;
1921 return 0;
1922 }
1923
1924 for (j = 0; j < hapd_iface->conf->num_bss; j++) {
1925 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf))
1926 return hostapd_remove_bss(hapd_iface, j);
1927 }
1928 }
1929 return -1;
1930}
1931
1932
1933/**
1934 * hostapd_new_assoc_sta - Notify that a new station associated with the AP
1935 * @hapd: Pointer to BSS data
1936 * @sta: Pointer to the associated STA data
1937 * @reassoc: 1 to indicate this was a re-association; 0 = first association
1938 *
1939 * This function will be called whenever a station associates with the AP. It
1940 * can be called from ieee802_11.c for drivers that export MLME to hostapd and
1941 * from drv_callbacks.c based on driver events for drivers that take care of
1942 * management frames (IEEE 802.11 authentication and association) internally.
1943 */
1944void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
1945 int reassoc)
1946{
1947 if (hapd->tkip_countermeasures) {
1948 hostapd_drv_sta_deauth(hapd, sta->addr,
1949 WLAN_REASON_MICHAEL_MIC_FAILURE);
1950 return;
1951 }
1952
1953 hostapd_prune_associations(hapd, sta->addr);
1954
1955 /* IEEE 802.11F (IAPP) */
1956 if (hapd->conf->ieee802_11f)
1957 iapp_new_station(hapd->iapp, sta);
1958
1959#ifdef CONFIG_P2P
1960 if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
1961 sta->no_p2p_set = 1;
1962 hapd->num_sta_no_p2p++;
1963 if (hapd->num_sta_no_p2p == 1)
1964 hostapd_p2p_non_p2p_sta_connected(hapd);
1965 }
1966#endif /* CONFIG_P2P */
1967
1968 /* Start accounting here, if IEEE 802.1X and WPA are not used.
1969 * IEEE 802.1X/WPA code will start accounting after the station has
1970 * been authorized. */
1971 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) {
1972 os_get_reltime(&sta->connected_time);
1973 accounting_sta_start(hapd, sta);
1974 }
1975
1976 /* Start IEEE 802.1X authentication process for new stations */
1977 ieee802_1x_new_station(hapd, sta);
1978 if (reassoc) {
1979 if (sta->auth_alg != WLAN_AUTH_FT &&
1980 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
1981 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
1982 } else
1983 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
1984
1985 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
1986 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
1987 "for " MACSTR " (%d seconds - ap_max_inactivity)",
1988 __func__, MAC2STR(sta->addr),
1989 hapd->conf->ap_max_inactivity);
1990 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1991 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
1992 ap_handle_timer, hapd, sta);
1993 }
1994}
1995
1996
1997const char * hostapd_state_text(enum hostapd_iface_state s)
1998{
1999 switch (s) {
2000 case HAPD_IFACE_UNINITIALIZED:
2001 return "UNINITIALIZED";
2002 case HAPD_IFACE_DISABLED:
2003 return "DISABLED";
2004 case HAPD_IFACE_COUNTRY_UPDATE:
2005 return "COUNTRY_UPDATE";
2006 case HAPD_IFACE_ACS:
2007 return "ACS";
2008 case HAPD_IFACE_HT_SCAN:
2009 return "HT_SCAN";
2010 case HAPD_IFACE_DFS:
2011 return "DFS";
2012 case HAPD_IFACE_ENABLED:
2013 return "ENABLED";
2014 }
2015
2016 return "UNKNOWN";
2017}
2018
2019
2020void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s)
2021{
2022 wpa_printf(MSG_INFO, "%s: interface state %s->%s",
2023 iface->conf->bss[0]->iface, hostapd_state_text(iface->state),
2024 hostapd_state_text(s));
2025 iface->state = s;
2026}
2027
2028
2029#ifdef NEED_AP_MLME
2030
2031static void free_beacon_data(struct beacon_data *beacon)
2032{
2033 os_free(beacon->head);
2034 beacon->head = NULL;
2035 os_free(beacon->tail);
2036 beacon->tail = NULL;
2037 os_free(beacon->probe_resp);
2038 beacon->probe_resp = NULL;
2039 os_free(beacon->beacon_ies);
2040 beacon->beacon_ies = NULL;
2041 os_free(beacon->proberesp_ies);
2042 beacon->proberesp_ies = NULL;
2043 os_free(beacon->assocresp_ies);
2044 beacon->assocresp_ies = NULL;
2045}
2046
2047
2048static int hostapd_build_beacon_data(struct hostapd_iface *iface,
2049 struct beacon_data *beacon)
2050{
2051 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra;
2052 struct wpa_driver_ap_params params;
2053 int ret;
2054 struct hostapd_data *hapd = iface->bss[0];
2055
2056 os_memset(beacon, 0, sizeof(*beacon));
2057 ret = ieee802_11_build_ap_params(hapd, &params);
2058 if (ret < 0)
2059 return ret;
2060
2061 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra,
2062 &proberesp_extra,
2063 &assocresp_extra);
2064 if (ret)
2065 goto free_ap_params;
2066
2067 ret = -1;
2068 beacon->head = os_malloc(params.head_len);
2069 if (!beacon->head)
2070 goto free_ap_extra_ies;
2071
2072 os_memcpy(beacon->head, params.head, params.head_len);
2073 beacon->head_len = params.head_len;
2074
2075 beacon->tail = os_malloc(params.tail_len);
2076 if (!beacon->tail)
2077 goto free_beacon;
2078
2079 os_memcpy(beacon->tail, params.tail, params.tail_len);
2080 beacon->tail_len = params.tail_len;
2081
2082 if (params.proberesp != NULL) {
2083 beacon->probe_resp = os_malloc(params.proberesp_len);
2084 if (!beacon->probe_resp)
2085 goto free_beacon;
2086
2087 os_memcpy(beacon->probe_resp, params.proberesp,
2088 params.proberesp_len);
2089 beacon->probe_resp_len = params.proberesp_len;
2090 }
2091
2092 /* copy the extra ies */
2093 if (beacon_extra) {
2094 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra));
2095 if (!beacon->beacon_ies)
2096 goto free_beacon;
2097
2098 os_memcpy(beacon->beacon_ies,
2099 beacon_extra->buf, wpabuf_len(beacon_extra));
2100 beacon->beacon_ies_len = wpabuf_len(beacon_extra);
2101 }
2102
2103 if (proberesp_extra) {
2104 beacon->proberesp_ies =
2105 os_malloc(wpabuf_len(proberesp_extra));
2106 if (!beacon->proberesp_ies)
2107 goto free_beacon;
2108
2109 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf,
2110 wpabuf_len(proberesp_extra));
2111 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra);
2112 }
2113
2114 if (assocresp_extra) {
2115 beacon->assocresp_ies =
2116 os_malloc(wpabuf_len(assocresp_extra));
2117 if (!beacon->assocresp_ies)
2118 goto free_beacon;
2119
2120 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf,
2121 wpabuf_len(assocresp_extra));
2122 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra);
2123 }
2124
2125 ret = 0;
2126free_beacon:
2127 /* if the function fails, the caller should not free beacon data */
2128 if (ret)
2129 free_beacon_data(beacon);
2130
2131free_ap_extra_ies:
2132 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra,
2133 assocresp_extra);
2134free_ap_params:
2135 ieee802_11_free_ap_params(&params);
2136 return ret;
2137}
2138
2139
2140/*
2141 * TODO: This flow currently supports only changing frequency within the
2142 * same hw_mode. Any other changes to MAC parameters or provided settings (even
2143 * width) are not supported.
2144 */
2145static int hostapd_change_config_freq(struct hostapd_data *hapd,
2146 struct hostapd_config *conf,
2147 struct hostapd_freq_params *params,
2148 struct hostapd_freq_params *old_params)
2149{
2150 int channel;
2151
2152 if (!params->channel) {
2153 /* check if the new channel is supported by hw */
2154 channel = hostapd_hw_get_channel(hapd, params->freq);
2155 if (!channel)
2156 return -1;
2157 } else {
2158 channel = params->channel;
2159 }
2160
2161 /* if a pointer to old_params is provided we save previous state */
2162 if (old_params) {
2163 old_params->channel = conf->channel;
2164 old_params->ht_enabled = conf->ieee80211n;
2165 old_params->sec_channel_offset = conf->secondary_channel;
2166 }
2167
2168 conf->channel = channel;
2169 conf->ieee80211n = params->ht_enabled;
2170 conf->secondary_channel = params->sec_channel_offset;
2171
2172 /* TODO: maybe call here hostapd_config_check here? */
2173
2174 return 0;
2175}
2176
2177
2178static int hostapd_fill_csa_settings(struct hostapd_iface *iface,
2179 struct csa_settings *settings)
2180{
2181 struct hostapd_freq_params old_freq;
2182 int ret;
2183
2184 os_memset(&old_freq, 0, sizeof(old_freq));
2185 if (!iface || !iface->freq || iface->csa_in_progress)
2186 return -1;
2187
2188 ret = hostapd_change_config_freq(iface->bss[0], iface->conf,
2189 &settings->freq_params,
2190 &old_freq);
2191 if (ret)
2192 return ret;
2193
2194 ret = hostapd_build_beacon_data(iface, &settings->beacon_after);
2195
2196 /* change back the configuration */
2197 hostapd_change_config_freq(iface->bss[0], iface->conf,
2198 &old_freq, NULL);
2199
2200 if (ret)
2201 return ret;
2202
2203 /* set channel switch parameters for csa ie */
2204 iface->cs_freq_params = settings->freq_params;
2205 iface->cs_count = settings->cs_count;
2206 iface->cs_block_tx = settings->block_tx;
2207
2208 ret = hostapd_build_beacon_data(iface, &settings->beacon_csa);
2209 if (ret) {
2210 free_beacon_data(&settings->beacon_after);
2211 return ret;
2212 }
2213
2214 settings->counter_offset_beacon = iface->cs_c_off_beacon;
2215 settings->counter_offset_presp = iface->cs_c_off_proberesp;
2216
2217 return 0;
2218}
2219
2220
2221void hostapd_cleanup_cs_params(struct hostapd_data *hapd)
2222{
2223 os_memset(&hapd->iface->cs_freq_params, 0,
2224 sizeof(hapd->iface->cs_freq_params));
2225 hapd->iface->cs_count = 0;
2226 hapd->iface->cs_block_tx = 0;
2227 hapd->iface->cs_c_off_beacon = 0;
2228 hapd->iface->cs_c_off_proberesp = 0;
2229 hapd->iface->csa_in_progress = 0;
2230}
2231
2232
2233int hostapd_switch_channel(struct hostapd_data *hapd,
2234 struct csa_settings *settings)
2235{
2236 int ret;
2237 ret = hostapd_fill_csa_settings(hapd->iface, settings);
2238 if (ret)
2239 return ret;
2240
2241 ret = hostapd_drv_switch_channel(hapd, settings);
2242 free_beacon_data(&settings->beacon_csa);
2243 free_beacon_data(&settings->beacon_after);
2244
2245 if (ret) {
2246 /* if we failed, clean cs parameters */
2247 hostapd_cleanup_cs_params(hapd);
2248 return ret;
2249 }
2250
2251 hapd->iface->csa_in_progress = 1;
2252 return 0;
2253}
2254
2255#endif /* NEED_AP_MLME */