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