xref: /freebsd/contrib/wpa/src/ap/hostapd.c (revision 7431dfd4580e850375fe5478d92ec770344db098)
1 /*
2  * hostapd / Initialization and configuration
3  * Copyright (c) 2002-2012, 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 "radius/radius_client.h"
15 #include "radius/radius_das.h"
16 #include "drivers/driver.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 
36 
37 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason);
38 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd);
39 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd);
40 
41 extern int wpa_debug_level;
42 extern struct wpa_driver_ops *wpa_drivers[];
43 
44 
45 int 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 
62 static void hostapd_reload_bss(struct hostapd_data *hapd)
63 {
64 #ifndef CONFIG_NO_RADIUS
65 	radius_client_reconfig(hapd->radius, hapd->conf->radius);
66 #endif /* CONFIG_NO_RADIUS */
67 
68 	if (hostapd_setup_wpa_psk(hapd->conf)) {
69 		wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
70 			   "after reloading configuration");
71 	}
72 
73 	if (hapd->conf->ieee802_1x || hapd->conf->wpa)
74 		hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1);
75 	else
76 		hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0);
77 
78 	if (hapd->conf->wpa && hapd->wpa_auth == NULL) {
79 		hostapd_setup_wpa(hapd);
80 		if (hapd->wpa_auth)
81 			wpa_init_keys(hapd->wpa_auth);
82 	} else if (hapd->conf->wpa) {
83 		const u8 *wpa_ie;
84 		size_t wpa_ie_len;
85 		hostapd_reconfig_wpa(hapd);
86 		wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
87 		if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len))
88 			wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
89 				   "the kernel driver.");
90 	} else if (hapd->wpa_auth) {
91 		wpa_deinit(hapd->wpa_auth);
92 		hapd->wpa_auth = NULL;
93 		hostapd_set_privacy(hapd, 0);
94 		hostapd_setup_encryption(hapd->conf->iface, hapd);
95 		hostapd_set_generic_elem(hapd, (u8 *) "", 0);
96 	}
97 
98 	ieee802_11_set_beacon(hapd);
99 	hostapd_update_wps(hapd);
100 
101 	if (hapd->conf->ssid.ssid_set &&
102 	    hostapd_set_ssid(hapd, hapd->conf->ssid.ssid,
103 			     hapd->conf->ssid.ssid_len)) {
104 		wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
105 		/* try to continue */
106 	}
107 	wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface);
108 }
109 
110 
111 int hostapd_reload_config(struct hostapd_iface *iface)
112 {
113 	struct hostapd_data *hapd = iface->bss[0];
114 	struct hostapd_config *newconf, *oldconf;
115 	size_t j;
116 
117 	if (iface->interfaces == NULL ||
118 	    iface->interfaces->config_read_cb == NULL)
119 		return -1;
120 	newconf = iface->interfaces->config_read_cb(iface->config_fname);
121 	if (newconf == NULL)
122 		return -1;
123 
124 	/*
125 	 * Deauthenticate all stations since the new configuration may not
126 	 * allow them to use the BSS anymore.
127 	 */
128 	for (j = 0; j < iface->num_bss; j++) {
129 		hostapd_flush_old_stations(iface->bss[j],
130 					   WLAN_REASON_PREV_AUTH_NOT_VALID);
131 		hostapd_broadcast_wep_clear(iface->bss[j]);
132 
133 #ifndef CONFIG_NO_RADIUS
134 		/* TODO: update dynamic data based on changed configuration
135 		 * items (e.g., open/close sockets, etc.) */
136 		radius_client_flush(iface->bss[j]->radius, 0);
137 #endif /* CONFIG_NO_RADIUS */
138 	}
139 
140 	oldconf = hapd->iconf;
141 	iface->conf = newconf;
142 
143 	for (j = 0; j < iface->num_bss; j++) {
144 		hapd = iface->bss[j];
145 		hapd->iconf = newconf;
146 		hapd->conf = &newconf->bss[j];
147 		hostapd_reload_bss(hapd);
148 	}
149 
150 	hostapd_config_free(oldconf);
151 
152 
153 	return 0;
154 }
155 
156 
157 static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
158 					      char *ifname)
159 {
160 	int i;
161 
162 	for (i = 0; i < NUM_WEP_KEYS; i++) {
163 		if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i,
164 					0, NULL, 0, NULL, 0)) {
165 			wpa_printf(MSG_DEBUG, "Failed to clear default "
166 				   "encryption keys (ifname=%s keyidx=%d)",
167 				   ifname, i);
168 		}
169 	}
170 #ifdef CONFIG_IEEE80211W
171 	if (hapd->conf->ieee80211w) {
172 		for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) {
173 			if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE,
174 						NULL, i, 0, NULL,
175 						0, NULL, 0)) {
176 				wpa_printf(MSG_DEBUG, "Failed to clear "
177 					   "default mgmt encryption keys "
178 					   "(ifname=%s keyidx=%d)", ifname, i);
179 			}
180 		}
181 	}
182 #endif /* CONFIG_IEEE80211W */
183 }
184 
185 
186 static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
187 {
188 	hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
189 	return 0;
190 }
191 
192 
193 static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
194 {
195 	int errors = 0, idx;
196 	struct hostapd_ssid *ssid = &hapd->conf->ssid;
197 
198 	idx = ssid->wep.idx;
199 	if (ssid->wep.default_len &&
200 	    hostapd_drv_set_key(hapd->conf->iface,
201 				hapd, WPA_ALG_WEP, broadcast_ether_addr, idx,
202 				1, NULL, 0, ssid->wep.key[idx],
203 				ssid->wep.len[idx])) {
204 		wpa_printf(MSG_WARNING, "Could not set WEP encryption.");
205 		errors++;
206 	}
207 
208 	if (ssid->dyn_vlan_keys) {
209 		size_t i;
210 		for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
211 			const char *ifname;
212 			struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
213 			if (key == NULL)
214 				continue;
215 			ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
216 							    i);
217 			if (ifname == NULL)
218 				continue;
219 
220 			idx = key->idx;
221 			if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_WEP,
222 						broadcast_ether_addr, idx, 1,
223 						NULL, 0, key->key[idx],
224 						key->len[idx])) {
225 				wpa_printf(MSG_WARNING, "Could not set "
226 					   "dynamic VLAN WEP encryption.");
227 				errors++;
228 			}
229 		}
230 	}
231 
232 	return errors;
233 }
234 
235 
236 static void hostapd_free_hapd_data(struct hostapd_data *hapd)
237 {
238 	iapp_deinit(hapd->iapp);
239 	hapd->iapp = NULL;
240 	accounting_deinit(hapd);
241 	hostapd_deinit_wpa(hapd);
242 	vlan_deinit(hapd);
243 	hostapd_acl_deinit(hapd);
244 #ifndef CONFIG_NO_RADIUS
245 	radius_client_deinit(hapd->radius);
246 	hapd->radius = NULL;
247 	radius_das_deinit(hapd->radius_das);
248 	hapd->radius_das = NULL;
249 #endif /* CONFIG_NO_RADIUS */
250 
251 	hostapd_deinit_wps(hapd);
252 
253 	authsrv_deinit(hapd);
254 
255 	if (hapd->interface_added &&
256 	    hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) {
257 		wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s",
258 			   hapd->conf->iface);
259 	}
260 
261 	os_free(hapd->probereq_cb);
262 	hapd->probereq_cb = NULL;
263 
264 #ifdef CONFIG_P2P
265 	wpabuf_free(hapd->p2p_beacon_ie);
266 	hapd->p2p_beacon_ie = NULL;
267 	wpabuf_free(hapd->p2p_probe_resp_ie);
268 	hapd->p2p_probe_resp_ie = NULL;
269 #endif /* CONFIG_P2P */
270 
271 	wpabuf_free(hapd->time_adv);
272 
273 #ifdef CONFIG_INTERWORKING
274 	gas_serv_deinit(hapd);
275 #endif /* CONFIG_INTERWORKING */
276 
277 #ifdef CONFIG_SQLITE
278 	os_free(hapd->tmp_eap_user.identity);
279 	os_free(hapd->tmp_eap_user.password);
280 #endif /* CONFIG_SQLITE */
281 }
282 
283 
284 /**
285  * hostapd_cleanup - Per-BSS cleanup (deinitialization)
286  * @hapd: Pointer to BSS data
287  *
288  * This function is used to free all per-BSS data structures and resources.
289  * This gets called in a loop for each BSS between calls to
290  * hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
291  * is deinitialized. Most of the modules that are initialized in
292  * hostapd_setup_bss() are deinitialized here.
293  */
294 static void hostapd_cleanup(struct hostapd_data *hapd)
295 {
296 	if (hapd->iface->interfaces &&
297 	    hapd->iface->interfaces->ctrl_iface_deinit)
298 		hapd->iface->interfaces->ctrl_iface_deinit(hapd);
299 	hostapd_free_hapd_data(hapd);
300 }
301 
302 
303 /**
304  * hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
305  * @iface: Pointer to interface data
306  *
307  * This function is called before per-BSS data structures are deinitialized
308  * with hostapd_cleanup().
309  */
310 static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
311 {
312 }
313 
314 
315 static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface)
316 {
317 	hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
318 	iface->hw_features = NULL;
319 	os_free(iface->current_rates);
320 	iface->current_rates = NULL;
321 	os_free(iface->basic_rates);
322 	iface->basic_rates = NULL;
323 	ap_list_deinit(iface);
324 }
325 
326 
327 /**
328  * hostapd_cleanup_iface - Complete per-interface cleanup
329  * @iface: Pointer to interface data
330  *
331  * This function is called after per-BSS data structures are deinitialized
332  * with hostapd_cleanup().
333  */
334 static void hostapd_cleanup_iface(struct hostapd_iface *iface)
335 {
336 	hostapd_cleanup_iface_partial(iface);
337 	hostapd_config_free(iface->conf);
338 	iface->conf = NULL;
339 
340 	os_free(iface->config_fname);
341 	os_free(iface->bss);
342 	os_free(iface);
343 }
344 
345 
346 static void hostapd_clear_wep(struct hostapd_data *hapd)
347 {
348 	if (hapd->drv_priv) {
349 		hostapd_set_privacy(hapd, 0);
350 		hostapd_broadcast_wep_clear(hapd);
351 	}
352 }
353 
354 
355 static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
356 {
357 	int i;
358 
359 	hostapd_broadcast_wep_set(hapd);
360 
361 	if (hapd->conf->ssid.wep.default_len) {
362 		hostapd_set_privacy(hapd, 1);
363 		return 0;
364 	}
365 
366 	/*
367 	 * When IEEE 802.1X is not enabled, the driver may need to know how to
368 	 * set authentication algorithms for static WEP.
369 	 */
370 	hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs);
371 
372 	for (i = 0; i < 4; i++) {
373 		if (hapd->conf->ssid.wep.key[i] &&
374 		    hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i,
375 					i == hapd->conf->ssid.wep.idx, NULL, 0,
376 					hapd->conf->ssid.wep.key[i],
377 					hapd->conf->ssid.wep.len[i])) {
378 			wpa_printf(MSG_WARNING, "Could not set WEP "
379 				   "encryption.");
380 			return -1;
381 		}
382 		if (hapd->conf->ssid.wep.key[i] &&
383 		    i == hapd->conf->ssid.wep.idx)
384 			hostapd_set_privacy(hapd, 1);
385 	}
386 
387 	return 0;
388 }
389 
390 
391 static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason)
392 {
393 	int ret = 0;
394 	u8 addr[ETH_ALEN];
395 
396 	if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL)
397 		return 0;
398 
399 	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Flushing old station entries");
400 	if (hostapd_flush(hapd)) {
401 		wpa_msg(hapd->msg_ctx, MSG_WARNING, "Could not connect to "
402 			"kernel driver");
403 		ret = -1;
404 	}
405 	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations");
406 	os_memset(addr, 0xff, ETH_ALEN);
407 	hostapd_drv_sta_deauth(hapd, addr, reason);
408 	hostapd_free_stas(hapd);
409 
410 	return ret;
411 }
412 
413 
414 /**
415  * hostapd_validate_bssid_configuration - Validate BSSID configuration
416  * @iface: Pointer to interface data
417  * Returns: 0 on success, -1 on failure
418  *
419  * This function is used to validate that the configured BSSIDs are valid.
420  */
421 static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
422 {
423 	u8 mask[ETH_ALEN] = { 0 };
424 	struct hostapd_data *hapd = iface->bss[0];
425 	unsigned int i = iface->conf->num_bss, bits = 0, j;
426 	int auto_addr = 0;
427 
428 	if (hostapd_drv_none(hapd))
429 		return 0;
430 
431 	/* Generate BSSID mask that is large enough to cover the BSSIDs. */
432 
433 	/* Determine the bits necessary to cover the number of BSSIDs. */
434 	for (i--; i; i >>= 1)
435 		bits++;
436 
437 	/* Determine the bits necessary to any configured BSSIDs,
438 	   if they are higher than the number of BSSIDs. */
439 	for (j = 0; j < iface->conf->num_bss; j++) {
440 		if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0) {
441 			if (j)
442 				auto_addr++;
443 			continue;
444 		}
445 
446 		for (i = 0; i < ETH_ALEN; i++) {
447 			mask[i] |=
448 				iface->conf->bss[j].bssid[i] ^
449 				hapd->own_addr[i];
450 		}
451 	}
452 
453 	if (!auto_addr)
454 		goto skip_mask_ext;
455 
456 	for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
457 		;
458 	j = 0;
459 	if (i < ETH_ALEN) {
460 		j = (5 - i) * 8;
461 
462 		while (mask[i] != 0) {
463 			mask[i] >>= 1;
464 			j++;
465 		}
466 	}
467 
468 	if (bits < j)
469 		bits = j;
470 
471 	if (bits > 40) {
472 		wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)",
473 			   bits);
474 		return -1;
475 	}
476 
477 	os_memset(mask, 0xff, ETH_ALEN);
478 	j = bits / 8;
479 	for (i = 5; i > 5 - j; i--)
480 		mask[i] = 0;
481 	j = bits % 8;
482 	while (j--)
483 		mask[i] <<= 1;
484 
485 skip_mask_ext:
486 	wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
487 		   (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
488 
489 	if (!auto_addr)
490 		return 0;
491 
492 	for (i = 0; i < ETH_ALEN; i++) {
493 		if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
494 			wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR
495 				   " for start address " MACSTR ".",
496 				   MAC2STR(mask), MAC2STR(hapd->own_addr));
497 			wpa_printf(MSG_ERROR, "Start address must be the "
498 				   "first address in the block (i.e., addr "
499 				   "AND mask == addr).");
500 			return -1;
501 		}
502 	}
503 
504 	return 0;
505 }
506 
507 
508 static int mac_in_conf(struct hostapd_config *conf, const void *a)
509 {
510 	size_t i;
511 
512 	for (i = 0; i < conf->num_bss; i++) {
513 		if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
514 			return 1;
515 		}
516 	}
517 
518 	return 0;
519 }
520 
521 
522 #ifndef CONFIG_NO_RADIUS
523 
524 static int hostapd_das_nas_mismatch(struct hostapd_data *hapd,
525 				    struct radius_das_attrs *attr)
526 {
527 	/* TODO */
528 	return 0;
529 }
530 
531 
532 static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd,
533 					      struct radius_das_attrs *attr)
534 {
535 	struct sta_info *sta = NULL;
536 	char buf[128];
537 
538 	if (attr->sta_addr)
539 		sta = ap_get_sta(hapd, attr->sta_addr);
540 
541 	if (sta == NULL && attr->acct_session_id &&
542 	    attr->acct_session_id_len == 17) {
543 		for (sta = hapd->sta_list; sta; sta = sta->next) {
544 			os_snprintf(buf, sizeof(buf), "%08X-%08X",
545 				    sta->acct_session_id_hi,
546 				    sta->acct_session_id_lo);
547 			if (os_memcmp(attr->acct_session_id, buf, 17) == 0)
548 				break;
549 		}
550 	}
551 
552 	if (sta == NULL && attr->cui) {
553 		for (sta = hapd->sta_list; sta; sta = sta->next) {
554 			struct wpabuf *cui;
555 			cui = ieee802_1x_get_radius_cui(sta->eapol_sm);
556 			if (cui && wpabuf_len(cui) == attr->cui_len &&
557 			    os_memcmp(wpabuf_head(cui), attr->cui,
558 				      attr->cui_len) == 0)
559 				break;
560 		}
561 	}
562 
563 	if (sta == NULL && attr->user_name) {
564 		for (sta = hapd->sta_list; sta; sta = sta->next) {
565 			u8 *identity;
566 			size_t identity_len;
567 			identity = ieee802_1x_get_identity(sta->eapol_sm,
568 							   &identity_len);
569 			if (identity &&
570 			    identity_len == attr->user_name_len &&
571 			    os_memcmp(identity, attr->user_name, identity_len)
572 			    == 0)
573 				break;
574 		}
575 	}
576 
577 	return sta;
578 }
579 
580 
581 static enum radius_das_res
582 hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr)
583 {
584 	struct hostapd_data *hapd = ctx;
585 	struct sta_info *sta;
586 
587 	if (hostapd_das_nas_mismatch(hapd, attr))
588 		return RADIUS_DAS_NAS_MISMATCH;
589 
590 	sta = hostapd_das_find_sta(hapd, attr);
591 	if (sta == NULL)
592 		return RADIUS_DAS_SESSION_NOT_FOUND;
593 
594 	hostapd_drv_sta_deauth(hapd, sta->addr,
595 			       WLAN_REASON_PREV_AUTH_NOT_VALID);
596 	ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID);
597 
598 	return RADIUS_DAS_SUCCESS;
599 }
600 
601 #endif /* CONFIG_NO_RADIUS */
602 
603 
604 /**
605  * hostapd_setup_bss - Per-BSS setup (initialization)
606  * @hapd: Pointer to BSS data
607  * @first: Whether this BSS is the first BSS of an interface
608  *
609  * This function is used to initialize all per-BSS data structures and
610  * resources. This gets called in a loop for each BSS when an interface is
611  * initialized. Most of the modules that are initialized here will be
612  * deinitialized in hostapd_cleanup().
613  */
614 static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
615 {
616 	struct hostapd_bss_config *conf = hapd->conf;
617 	u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
618 	int ssid_len, set_ssid;
619 	char force_ifname[IFNAMSIZ];
620 	u8 if_addr[ETH_ALEN];
621 
622 	if (!first) {
623 		if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
624 			/* Allocate the next available BSSID. */
625 			do {
626 				inc_byte_array(hapd->own_addr, ETH_ALEN);
627 			} while (mac_in_conf(hapd->iconf, hapd->own_addr));
628 		} else {
629 			/* Allocate the configured BSSID. */
630 			os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
631 
632 			if (hostapd_mac_comp(hapd->own_addr,
633 					     hapd->iface->bss[0]->own_addr) ==
634 			    0) {
635 				wpa_printf(MSG_ERROR, "BSS '%s' may not have "
636 					   "BSSID set to the MAC address of "
637 					   "the radio", hapd->conf->iface);
638 				return -1;
639 			}
640 		}
641 
642 		hapd->interface_added = 1;
643 		if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS,
644 				   hapd->conf->iface, hapd->own_addr, hapd,
645 				   &hapd->drv_priv, force_ifname, if_addr,
646 				   hapd->conf->bridge[0] ? hapd->conf->bridge :
647 				   NULL)) {
648 			wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID="
649 				   MACSTR ")", MAC2STR(hapd->own_addr));
650 			return -1;
651 		}
652 	}
653 
654 	if (conf->wmm_enabled < 0)
655 		conf->wmm_enabled = hapd->iconf->ieee80211n;
656 
657 	hostapd_flush_old_stations(hapd, WLAN_REASON_PREV_AUTH_NOT_VALID);
658 	hostapd_set_privacy(hapd, 0);
659 
660 	hostapd_broadcast_wep_clear(hapd);
661 	if (hostapd_setup_encryption(hapd->conf->iface, hapd))
662 		return -1;
663 
664 	/*
665 	 * Fetch the SSID from the system and use it or,
666 	 * if one was specified in the config file, verify they
667 	 * match.
668 	 */
669 	ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
670 	if (ssid_len < 0) {
671 		wpa_printf(MSG_ERROR, "Could not read SSID from system");
672 		return -1;
673 	}
674 	if (conf->ssid.ssid_set) {
675 		/*
676 		 * If SSID is specified in the config file and it differs
677 		 * from what is being used then force installation of the
678 		 * new SSID.
679 		 */
680 		set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
681 			    os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
682 	} else {
683 		/*
684 		 * No SSID in the config file; just use the one we got
685 		 * from the system.
686 		 */
687 		set_ssid = 0;
688 		conf->ssid.ssid_len = ssid_len;
689 		os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
690 	}
691 
692 	if (!hostapd_drv_none(hapd)) {
693 		wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR
694 			   " and ssid \"%s\"",
695 			   hapd->conf->iface, MAC2STR(hapd->own_addr),
696 			   wpa_ssid_txt(hapd->conf->ssid.ssid,
697 					hapd->conf->ssid.ssid_len));
698 	}
699 
700 	if (hostapd_setup_wpa_psk(conf)) {
701 		wpa_printf(MSG_ERROR, "WPA-PSK setup failed.");
702 		return -1;
703 	}
704 
705 	/* Set SSID for the kernel driver (to be used in beacon and probe
706 	 * response frames) */
707 	if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid,
708 					 conf->ssid.ssid_len)) {
709 		wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver");
710 		return -1;
711 	}
712 
713 	if (wpa_debug_level == MSG_MSGDUMP)
714 		conf->radius->msg_dumps = 1;
715 #ifndef CONFIG_NO_RADIUS
716 	hapd->radius = radius_client_init(hapd, conf->radius);
717 	if (hapd->radius == NULL) {
718 		wpa_printf(MSG_ERROR, "RADIUS client initialization failed.");
719 		return -1;
720 	}
721 
722 	if (hapd->conf->radius_das_port) {
723 		struct radius_das_conf das_conf;
724 		os_memset(&das_conf, 0, sizeof(das_conf));
725 		das_conf.port = hapd->conf->radius_das_port;
726 		das_conf.shared_secret = hapd->conf->radius_das_shared_secret;
727 		das_conf.shared_secret_len =
728 			hapd->conf->radius_das_shared_secret_len;
729 		das_conf.client_addr = &hapd->conf->radius_das_client_addr;
730 		das_conf.time_window = hapd->conf->radius_das_time_window;
731 		das_conf.require_event_timestamp =
732 			hapd->conf->radius_das_require_event_timestamp;
733 		das_conf.ctx = hapd;
734 		das_conf.disconnect = hostapd_das_disconnect;
735 		hapd->radius_das = radius_das_init(&das_conf);
736 		if (hapd->radius_das == NULL) {
737 			wpa_printf(MSG_ERROR, "RADIUS DAS initialization "
738 				   "failed.");
739 			return -1;
740 		}
741 	}
742 #endif /* CONFIG_NO_RADIUS */
743 
744 	if (hostapd_acl_init(hapd)) {
745 		wpa_printf(MSG_ERROR, "ACL initialization failed.");
746 		return -1;
747 	}
748 	if (hostapd_init_wps(hapd, conf))
749 		return -1;
750 
751 	if (authsrv_init(hapd) < 0)
752 		return -1;
753 
754 	if (ieee802_1x_init(hapd)) {
755 		wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed.");
756 		return -1;
757 	}
758 
759 	if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
760 		return -1;
761 
762 	if (accounting_init(hapd)) {
763 		wpa_printf(MSG_ERROR, "Accounting initialization failed.");
764 		return -1;
765 	}
766 
767 	if (hapd->conf->ieee802_11f &&
768 	    (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
769 		wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization "
770 			   "failed.");
771 		return -1;
772 	}
773 
774 #ifdef CONFIG_INTERWORKING
775 	if (gas_serv_init(hapd)) {
776 		wpa_printf(MSG_ERROR, "GAS server initialization failed");
777 		return -1;
778 	}
779 #endif /* CONFIG_INTERWORKING */
780 
781 	if (hapd->iface->interfaces &&
782 	    hapd->iface->interfaces->ctrl_iface_init &&
783 	    hapd->iface->interfaces->ctrl_iface_init(hapd)) {
784 		wpa_printf(MSG_ERROR, "Failed to setup control interface");
785 		return -1;
786 	}
787 
788 	if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
789 		wpa_printf(MSG_ERROR, "VLAN initialization failed.");
790 		return -1;
791 	}
792 
793 	ieee802_11_set_beacon(hapd);
794 
795 	if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0)
796 		return -1;
797 
798 	if (hapd->driver && hapd->driver->set_operstate)
799 		hapd->driver->set_operstate(hapd->drv_priv, 1);
800 
801 	return 0;
802 }
803 
804 
805 static void hostapd_tx_queue_params(struct hostapd_iface *iface)
806 {
807 	struct hostapd_data *hapd = iface->bss[0];
808 	int i;
809 	struct hostapd_tx_queue_params *p;
810 
811 	for (i = 0; i < NUM_TX_QUEUES; i++) {
812 		p = &iface->conf->tx_queue[i];
813 
814 		if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
815 						p->cwmax, p->burst)) {
816 			wpa_printf(MSG_DEBUG, "Failed to set TX queue "
817 				   "parameters for queue %d.", i);
818 			/* Continue anyway */
819 		}
820 	}
821 }
822 
823 
824 static int setup_interface(struct hostapd_iface *iface)
825 {
826 	struct hostapd_data *hapd = iface->bss[0];
827 	size_t i;
828 	char country[4];
829 
830 	/*
831 	 * Make sure that all BSSes get configured with a pointer to the same
832 	 * driver interface.
833 	 */
834 	for (i = 1; i < iface->num_bss; i++) {
835 		iface->bss[i]->driver = hapd->driver;
836 		iface->bss[i]->drv_priv = hapd->drv_priv;
837 	}
838 
839 	if (hostapd_validate_bssid_configuration(iface))
840 		return -1;
841 
842 	if (hapd->iconf->country[0] && hapd->iconf->country[1]) {
843 		os_memcpy(country, hapd->iconf->country, 3);
844 		country[3] = '\0';
845 		if (hostapd_set_country(hapd, country) < 0) {
846 			wpa_printf(MSG_ERROR, "Failed to set country code");
847 			return -1;
848 		}
849 	}
850 
851 	if (hostapd_get_hw_features(iface)) {
852 		/* Not all drivers support this yet, so continue without hw
853 		 * feature data. */
854 	} else {
855 		int ret = hostapd_select_hw_mode(iface);
856 		if (ret < 0) {
857 			wpa_printf(MSG_ERROR, "Could not select hw_mode and "
858 				   "channel. (%d)", ret);
859 			return -1;
860 		}
861 		ret = hostapd_check_ht_capab(iface);
862 		if (ret < 0)
863 			return -1;
864 		if (ret == 1) {
865 			wpa_printf(MSG_DEBUG, "Interface initialization will "
866 				   "be completed in a callback");
867 			return 0;
868 		}
869 	}
870 	return hostapd_setup_interface_complete(iface, 0);
871 }
872 
873 
874 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err)
875 {
876 	struct hostapd_data *hapd = iface->bss[0];
877 	size_t j;
878 	u8 *prev_addr;
879 
880 	if (err) {
881 		wpa_printf(MSG_ERROR, "Interface initialization failed");
882 		eloop_terminate();
883 		return -1;
884 	}
885 
886 	wpa_printf(MSG_DEBUG, "Completing interface initialization");
887 	if (hapd->iconf->channel) {
888 		iface->freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
889 		wpa_printf(MSG_DEBUG, "Mode: %s  Channel: %d  "
890 			   "Frequency: %d MHz",
891 			   hostapd_hw_mode_txt(hapd->iconf->hw_mode),
892 			   hapd->iconf->channel, iface->freq);
893 
894 		if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq,
895 				     hapd->iconf->channel,
896 				     hapd->iconf->ieee80211n,
897 				     hapd->iconf->secondary_channel)) {
898 			wpa_printf(MSG_ERROR, "Could not set channel for "
899 				   "kernel driver");
900 			return -1;
901 		}
902 	}
903 
904 	if (iface->current_mode) {
905 		if (hostapd_prepare_rates(iface, iface->current_mode)) {
906 			wpa_printf(MSG_ERROR, "Failed to prepare rates "
907 				   "table.");
908 			hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211,
909 				       HOSTAPD_LEVEL_WARNING,
910 				       "Failed to prepare rates table.");
911 			return -1;
912 		}
913 	}
914 
915 	if (hapd->iconf->rts_threshold > -1 &&
916 	    hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
917 		wpa_printf(MSG_ERROR, "Could not set RTS threshold for "
918 			   "kernel driver");
919 		return -1;
920 	}
921 
922 	if (hapd->iconf->fragm_threshold > -1 &&
923 	    hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
924 		wpa_printf(MSG_ERROR, "Could not set fragmentation threshold "
925 			   "for kernel driver");
926 		return -1;
927 	}
928 
929 	prev_addr = hapd->own_addr;
930 
931 	for (j = 0; j < iface->num_bss; j++) {
932 		hapd = iface->bss[j];
933 		if (j)
934 			os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
935 		if (hostapd_setup_bss(hapd, j == 0))
936 			return -1;
937 		if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
938 			prev_addr = hapd->own_addr;
939 	}
940 
941 	hostapd_tx_queue_params(iface);
942 
943 	ap_list_init(iface);
944 
945 	if (hostapd_driver_commit(hapd) < 0) {
946 		wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
947 			   "configuration", __func__);
948 		return -1;
949 	}
950 
951 	/*
952 	 * WPS UPnP module can be initialized only when the "upnp_iface" is up.
953 	 * If "interface" and "upnp_iface" are the same (e.g., non-bridge
954 	 * mode), the interface is up only after driver_commit, so initialize
955 	 * WPS after driver_commit.
956 	 */
957 	for (j = 0; j < iface->num_bss; j++) {
958 		if (hostapd_init_wps_complete(iface->bss[j]))
959 			return -1;
960 	}
961 
962 	if (hapd->setup_complete_cb)
963 		hapd->setup_complete_cb(hapd->setup_complete_cb_ctx);
964 
965 	wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
966 		   iface->bss[0]->conf->iface);
967 
968 	return 0;
969 }
970 
971 
972 /**
973  * hostapd_setup_interface - Setup of an interface
974  * @iface: Pointer to interface data.
975  * Returns: 0 on success, -1 on failure
976  *
977  * Initializes the driver interface, validates the configuration,
978  * and sets driver parameters based on the configuration.
979  * Flushes old stations, sets the channel, encryption,
980  * beacons, and WDS links based on the configuration.
981  */
982 int hostapd_setup_interface(struct hostapd_iface *iface)
983 {
984 	int ret;
985 
986 	ret = setup_interface(iface);
987 	if (ret) {
988 		wpa_printf(MSG_ERROR, "%s: Unable to setup interface.",
989 			   iface->bss[0]->conf->iface);
990 		return -1;
991 	}
992 
993 	return 0;
994 }
995 
996 
997 /**
998  * hostapd_alloc_bss_data - Allocate and initialize per-BSS data
999  * @hapd_iface: Pointer to interface data
1000  * @conf: Pointer to per-interface configuration
1001  * @bss: Pointer to per-BSS configuration for this BSS
1002  * Returns: Pointer to allocated BSS data
1003  *
1004  * This function is used to allocate per-BSS data structure. This data will be
1005  * freed after hostapd_cleanup() is called for it during interface
1006  * deinitialization.
1007  */
1008 struct hostapd_data *
1009 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
1010 		       struct hostapd_config *conf,
1011 		       struct hostapd_bss_config *bss)
1012 {
1013 	struct hostapd_data *hapd;
1014 
1015 	hapd = os_zalloc(sizeof(*hapd));
1016 	if (hapd == NULL)
1017 		return NULL;
1018 
1019 	hapd->new_assoc_sta_cb = hostapd_new_assoc_sta;
1020 	hapd->iconf = conf;
1021 	hapd->conf = bss;
1022 	hapd->iface = hapd_iface;
1023 	hapd->driver = hapd->iconf->driver;
1024 	hapd->ctrl_sock = -1;
1025 
1026 	return hapd;
1027 }
1028 
1029 
1030 void hostapd_interface_deinit(struct hostapd_iface *iface)
1031 {
1032 	size_t j;
1033 
1034 	if (iface == NULL)
1035 		return;
1036 
1037 	hostapd_cleanup_iface_pre(iface);
1038 	for (j = 0; j < iface->num_bss; j++) {
1039 		struct hostapd_data *hapd = iface->bss[j];
1040 		hostapd_free_stas(hapd);
1041 		hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1042 		hostapd_clear_wep(hapd);
1043 		hostapd_cleanup(hapd);
1044 	}
1045 }
1046 
1047 
1048 void hostapd_interface_free(struct hostapd_iface *iface)
1049 {
1050 	size_t j;
1051 	for (j = 0; j < iface->num_bss; j++)
1052 		os_free(iface->bss[j]);
1053 	hostapd_cleanup_iface(iface);
1054 }
1055 
1056 
1057 #ifdef HOSTAPD
1058 
1059 void hostapd_interface_deinit_free(struct hostapd_iface *iface)
1060 {
1061 	const struct wpa_driver_ops *driver;
1062 	void *drv_priv;
1063 	if (iface == NULL)
1064 		return;
1065 	driver = iface->bss[0]->driver;
1066 	drv_priv = iface->bss[0]->drv_priv;
1067 	hostapd_interface_deinit(iface);
1068 	if (driver && driver->hapd_deinit && drv_priv)
1069 		driver->hapd_deinit(drv_priv);
1070 	hostapd_interface_free(iface);
1071 }
1072 
1073 
1074 int hostapd_enable_iface(struct hostapd_iface *hapd_iface)
1075 {
1076 	if (hapd_iface->bss[0]->drv_priv != NULL) {
1077 		wpa_printf(MSG_ERROR, "Interface %s already enabled",
1078 			   hapd_iface->conf->bss[0].iface);
1079 		return -1;
1080 	}
1081 
1082 	wpa_printf(MSG_DEBUG, "Enable interface %s",
1083 		   hapd_iface->conf->bss[0].iface);
1084 
1085 	if (hapd_iface->interfaces == NULL ||
1086 	    hapd_iface->interfaces->driver_init == NULL ||
1087 	    hapd_iface->interfaces->driver_init(hapd_iface) ||
1088 	    hostapd_setup_interface(hapd_iface)) {
1089 		hostapd_interface_deinit_free(hapd_iface);
1090 		return -1;
1091 	}
1092 	return 0;
1093 }
1094 
1095 
1096 int hostapd_reload_iface(struct hostapd_iface *hapd_iface)
1097 {
1098 	size_t j;
1099 
1100 	wpa_printf(MSG_DEBUG, "Reload interface %s",
1101 		   hapd_iface->conf->bss[0].iface);
1102 	for (j = 0; j < hapd_iface->num_bss; j++) {
1103 		hostapd_flush_old_stations(hapd_iface->bss[j],
1104 					   WLAN_REASON_PREV_AUTH_NOT_VALID);
1105 
1106 #ifndef CONFIG_NO_RADIUS
1107 		/* TODO: update dynamic data based on changed configuration
1108 		 * items (e.g., open/close sockets, etc.) */
1109 		radius_client_flush(hapd_iface->bss[j]->radius, 0);
1110 #endif  /* CONFIG_NO_RADIUS */
1111 
1112 		hostapd_reload_bss(hapd_iface->bss[j]);
1113 	}
1114 	return 0;
1115 }
1116 
1117 
1118 int hostapd_disable_iface(struct hostapd_iface *hapd_iface)
1119 {
1120 	size_t j;
1121 	struct hostapd_bss_config *bss;
1122 	const struct wpa_driver_ops *driver;
1123 	void *drv_priv;
1124 
1125 	if (hapd_iface == NULL)
1126 		return -1;
1127 	bss = hapd_iface->bss[0]->conf;
1128 	driver = hapd_iface->bss[0]->driver;
1129 	drv_priv = hapd_iface->bss[0]->drv_priv;
1130 
1131 	/* whatever hostapd_interface_deinit does */
1132 	for (j = 0; j < hapd_iface->num_bss; j++) {
1133 		struct hostapd_data *hapd = hapd_iface->bss[j];
1134 		hostapd_free_stas(hapd);
1135 		hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING);
1136 		hostapd_clear_wep(hapd);
1137 		hostapd_free_hapd_data(hapd);
1138 	}
1139 
1140 	if (driver && driver->hapd_deinit && drv_priv) {
1141 		driver->hapd_deinit(drv_priv);
1142 		hapd_iface->bss[0]->drv_priv = NULL;
1143 	}
1144 
1145 	/* From hostapd_cleanup_iface: These were initialized in
1146 	 * hostapd_setup_interface and hostapd_setup_interface_complete
1147 	 */
1148 	hostapd_cleanup_iface_partial(hapd_iface);
1149 	bss->wpa = 0;
1150 	bss->wpa_key_mgmt = -1;
1151 	bss->wpa_pairwise = -1;
1152 
1153 	wpa_printf(MSG_DEBUG, "Interface %s disabled", bss->iface);
1154 	return 0;
1155 }
1156 
1157 
1158 static struct hostapd_iface *
1159 hostapd_iface_alloc(struct hapd_interfaces *interfaces)
1160 {
1161 	struct hostapd_iface **iface, *hapd_iface;
1162 
1163 	iface = os_realloc_array(interfaces->iface, interfaces->count + 1,
1164 				 sizeof(struct hostapd_iface *));
1165 	if (iface == NULL)
1166 		return NULL;
1167 	interfaces->iface = iface;
1168 	hapd_iface = interfaces->iface[interfaces->count] =
1169 		os_zalloc(sizeof(*hapd_iface));
1170 	if (hapd_iface == NULL) {
1171 		wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1172 			   "the interface", __func__);
1173 		return NULL;
1174 	}
1175 	interfaces->count++;
1176 	hapd_iface->interfaces = interfaces;
1177 
1178 	return hapd_iface;
1179 }
1180 
1181 
1182 static struct hostapd_config *
1183 hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname,
1184 		     const char *ctrl_iface)
1185 {
1186 	struct hostapd_bss_config *bss;
1187 	struct hostapd_config *conf;
1188 
1189 	/* Allocates memory for bss and conf */
1190 	conf = hostapd_config_defaults();
1191 	if (conf == NULL) {
1192 		 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for "
1193 				"configuration", __func__);
1194 		return NULL;
1195 	}
1196 
1197 	conf->driver = wpa_drivers[0];
1198 	if (conf->driver == NULL) {
1199 		wpa_printf(MSG_ERROR, "No driver wrappers registered!");
1200 		hostapd_config_free(conf);
1201 		return NULL;
1202 	}
1203 
1204 	bss = conf->last_bss = conf->bss;
1205 
1206 	os_strlcpy(bss->iface, ifname, sizeof(bss->iface));
1207 	bss->ctrl_interface = os_strdup(ctrl_iface);
1208 	if (bss->ctrl_interface == NULL) {
1209 		hostapd_config_free(conf);
1210 		return NULL;
1211 	}
1212 
1213 	/* Reading configuration file skipped, will be done in SET!
1214 	 * From reading the configuration till the end has to be done in
1215 	 * SET
1216 	 */
1217 	return conf;
1218 }
1219 
1220 
1221 static struct hostapd_iface * hostapd_data_alloc(
1222 	struct hapd_interfaces *interfaces, struct hostapd_config *conf)
1223 {
1224 	size_t i;
1225 	struct hostapd_iface *hapd_iface =
1226 		interfaces->iface[interfaces->count - 1];
1227 	struct hostapd_data *hapd;
1228 
1229 	hapd_iface->conf = conf;
1230 	hapd_iface->num_bss = conf->num_bss;
1231 
1232 	hapd_iface->bss = os_zalloc(conf->num_bss *
1233 				    sizeof(struct hostapd_data *));
1234 	if (hapd_iface->bss == NULL)
1235 		return NULL;
1236 
1237 	for (i = 0; i < conf->num_bss; i++) {
1238 		hapd = hapd_iface->bss[i] =
1239 			hostapd_alloc_bss_data(hapd_iface, conf,
1240 					       &conf->bss[i]);
1241 		if (hapd == NULL)
1242 			return NULL;
1243 		hapd->msg_ctx = hapd;
1244 	}
1245 
1246 	hapd_iface->interfaces = interfaces;
1247 
1248 	return hapd_iface;
1249 }
1250 
1251 
1252 int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf)
1253 {
1254 	struct hostapd_config *conf = NULL;
1255 	struct hostapd_iface *hapd_iface = NULL;
1256 	char *ptr;
1257 	size_t i;
1258 
1259 	ptr = os_strchr(buf, ' ');
1260 	if (ptr == NULL)
1261 		return -1;
1262 	*ptr++ = '\0';
1263 
1264 	for (i = 0; i < interfaces->count; i++) {
1265 		if (!os_strcmp(interfaces->iface[i]->conf->bss[0].iface,
1266 			       buf)) {
1267 			wpa_printf(MSG_INFO, "Cannot add interface - it "
1268 				   "already exists");
1269 			return -1;
1270 		}
1271 	}
1272 
1273 	hapd_iface = hostapd_iface_alloc(interfaces);
1274 	if (hapd_iface == NULL) {
1275 		wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1276 			   "for interface", __func__);
1277 		goto fail;
1278 	}
1279 
1280 	conf = hostapd_config_alloc(interfaces, buf, ptr);
1281 	if (conf == NULL) {
1282 		wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1283 			   "for configuration", __func__);
1284 		goto fail;
1285 	}
1286 
1287 	hapd_iface = hostapd_data_alloc(interfaces, conf);
1288 	if (hapd_iface == NULL) {
1289 		wpa_printf(MSG_ERROR, "%s: Failed to allocate memory "
1290 			   "for hostapd", __func__);
1291 		goto fail;
1292 	}
1293 
1294 	if (hapd_iface->interfaces &&
1295 	    hapd_iface->interfaces->ctrl_iface_init &&
1296 	    hapd_iface->interfaces->ctrl_iface_init(hapd_iface->bss[0])) {
1297 		wpa_printf(MSG_ERROR, "%s: Failed to setup control "
1298 			   "interface", __func__);
1299 		goto fail;
1300 	}
1301 	wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0].iface);
1302 
1303 	return 0;
1304 
1305 fail:
1306 	if (conf)
1307 		hostapd_config_free(conf);
1308 	if (hapd_iface) {
1309 		os_free(hapd_iface->bss[interfaces->count]);
1310 		os_free(hapd_iface);
1311 	}
1312 	return -1;
1313 }
1314 
1315 
1316 int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf)
1317 {
1318 	struct hostapd_iface *hapd_iface;
1319 	size_t i, k = 0;
1320 
1321 	for (i = 0; i < interfaces->count; i++) {
1322 		hapd_iface = interfaces->iface[i];
1323 		if (hapd_iface == NULL)
1324 			return -1;
1325 		if (!os_strcmp(hapd_iface->conf->bss[0].iface, buf)) {
1326 			wpa_printf(MSG_INFO, "Remove interface '%s'", buf);
1327 			hostapd_interface_deinit_free(hapd_iface);
1328 			k = i;
1329 			while (k < (interfaces->count - 1)) {
1330 				interfaces->iface[k] =
1331 					interfaces->iface[k + 1];
1332 				k++;
1333 			}
1334 			interfaces->count--;
1335 			return 0;
1336 		}
1337 	}
1338 	return -1;
1339 }
1340 
1341 #endif /* HOSTAPD */
1342 
1343 
1344 /**
1345  * hostapd_new_assoc_sta - Notify that a new station associated with the AP
1346  * @hapd: Pointer to BSS data
1347  * @sta: Pointer to the associated STA data
1348  * @reassoc: 1 to indicate this was a re-association; 0 = first association
1349  *
1350  * This function will be called whenever a station associates with the AP. It
1351  * can be called from ieee802_11.c for drivers that export MLME to hostapd and
1352  * from drv_callbacks.c based on driver events for drivers that take care of
1353  * management frames (IEEE 802.11 authentication and association) internally.
1354  */
1355 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
1356 			   int reassoc)
1357 {
1358 	if (hapd->tkip_countermeasures) {
1359 		hostapd_drv_sta_deauth(hapd, sta->addr,
1360 				       WLAN_REASON_MICHAEL_MIC_FAILURE);
1361 		return;
1362 	}
1363 
1364 	hostapd_prune_associations(hapd, sta->addr);
1365 
1366 	/* IEEE 802.11F (IAPP) */
1367 	if (hapd->conf->ieee802_11f)
1368 		iapp_new_station(hapd->iapp, sta);
1369 
1370 #ifdef CONFIG_P2P
1371 	if (sta->p2p_ie == NULL && !sta->no_p2p_set) {
1372 		sta->no_p2p_set = 1;
1373 		hapd->num_sta_no_p2p++;
1374 		if (hapd->num_sta_no_p2p == 1)
1375 			hostapd_p2p_non_p2p_sta_connected(hapd);
1376 	}
1377 #endif /* CONFIG_P2P */
1378 
1379 	/* Start accounting here, if IEEE 802.1X and WPA are not used.
1380 	 * IEEE 802.1X/WPA code will start accounting after the station has
1381 	 * been authorized. */
1382 	if (!hapd->conf->ieee802_1x && !hapd->conf->wpa) {
1383 		os_get_time(&sta->connected_time);
1384 		accounting_sta_start(hapd, sta);
1385 	}
1386 
1387 	/* Start IEEE 802.1X authentication process for new stations */
1388 	ieee802_1x_new_station(hapd, sta);
1389 	if (reassoc) {
1390 		if (sta->auth_alg != WLAN_AUTH_FT &&
1391 		    !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS)))
1392 			wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
1393 	} else
1394 		wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
1395 
1396 	wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
1397 		   "for " MACSTR " (%d seconds - ap_max_inactivity)",
1398 		   __func__, MAC2STR(sta->addr),
1399 		   hapd->conf->ap_max_inactivity);
1400 	eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1401 	eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
1402 			       ap_handle_timer, hapd, sta);
1403 }
1404