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