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HS 2.0: Request and process OSU Providers NAI List ANQP-element
[thirdparty/hostap.git] / wpa_supplicant / interworking.c
1 /*
2 * Interworking (IEEE 802.11u)
3 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
4 * Copyright (c) 2011-2014, Jouni Malinen <j@w1.fi>
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/gas.h"
15 #include "common/wpa_ctrl.h"
16 #include "utils/pcsc_funcs.h"
17 #include "utils/eloop.h"
18 #include "drivers/driver.h"
19 #include "eap_common/eap_defs.h"
20 #include "eap_peer/eap.h"
21 #include "eap_peer/eap_methods.h"
22 #include "eapol_supp/eapol_supp_sm.h"
23 #include "rsn_supp/wpa.h"
24 #include "wpa_supplicant_i.h"
25 #include "config.h"
26 #include "config_ssid.h"
27 #include "bss.h"
28 #include "scan.h"
29 #include "notify.h"
30 #include "driver_i.h"
31 #include "gas_query.h"
32 #include "hs20_supplicant.h"
33 #include "interworking.h"
34
35
36 #if defined(EAP_SIM) | defined(EAP_SIM_DYNAMIC)
37 #define INTERWORKING_3GPP
38 #else
39 #if defined(EAP_AKA) | defined(EAP_AKA_DYNAMIC)
40 #define INTERWORKING_3GPP
41 #else
42 #if defined(EAP_AKA_PRIME) | defined(EAP_AKA_PRIME_DYNAMIC)
43 #define INTERWORKING_3GPP
44 #endif
45 #endif
46 #endif
47
48 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s);
49 static struct wpa_cred * interworking_credentials_available_realm(
50 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
51 int *excluded);
52 static struct wpa_cred * interworking_credentials_available_3gpp(
53 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
54 int *excluded);
55
56
57 static int cred_prio_cmp(const struct wpa_cred *a, const struct wpa_cred *b)
58 {
59 if (a->priority > b->priority)
60 return 1;
61 if (a->priority < b->priority)
62 return -1;
63 if (a->provisioning_sp == NULL || b->provisioning_sp == NULL ||
64 os_strcmp(a->provisioning_sp, b->provisioning_sp) != 0)
65 return 0;
66 if (a->sp_priority < b->sp_priority)
67 return 1;
68 if (a->sp_priority > b->sp_priority)
69 return -1;
70 return 0;
71 }
72
73
74 static void interworking_reconnect(struct wpa_supplicant *wpa_s)
75 {
76 unsigned int tried;
77
78 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
79 wpa_supplicant_cancel_sched_scan(wpa_s);
80 wpa_s->own_disconnect_req = 1;
81 wpa_supplicant_deauthenticate(wpa_s,
82 WLAN_REASON_DEAUTH_LEAVING);
83 }
84 wpa_s->disconnected = 0;
85 wpa_s->reassociate = 1;
86 tried = wpa_s->interworking_fast_assoc_tried;
87 wpa_s->interworking_fast_assoc_tried = 1;
88
89 if (!tried && wpa_supplicant_fast_associate(wpa_s) >= 0)
90 return;
91
92 wpa_s->interworking_fast_assoc_tried = 0;
93 wpa_supplicant_req_scan(wpa_s, 0, 0);
94 }
95
96
97 static struct wpabuf * anqp_build_req(u16 info_ids[], size_t num_ids,
98 struct wpabuf *extra)
99 {
100 struct wpabuf *buf;
101 size_t i;
102 u8 *len_pos;
103
104 buf = gas_anqp_build_initial_req(0, 4 + num_ids * 2 +
105 (extra ? wpabuf_len(extra) : 0));
106 if (buf == NULL)
107 return NULL;
108
109 if (num_ids > 0) {
110 len_pos = gas_anqp_add_element(buf, ANQP_QUERY_LIST);
111 for (i = 0; i < num_ids; i++)
112 wpabuf_put_le16(buf, info_ids[i]);
113 gas_anqp_set_element_len(buf, len_pos);
114 }
115 if (extra)
116 wpabuf_put_buf(buf, extra);
117
118 gas_anqp_set_len(buf);
119
120 return buf;
121 }
122
123
124 static void interworking_anqp_resp_cb(void *ctx, const u8 *dst,
125 u8 dialog_token,
126 enum gas_query_result result,
127 const struct wpabuf *adv_proto,
128 const struct wpabuf *resp,
129 u16 status_code)
130 {
131 struct wpa_supplicant *wpa_s = ctx;
132
133 wpa_printf(MSG_DEBUG, "ANQP: Response callback dst=" MACSTR
134 " dialog_token=%u result=%d status_code=%u",
135 MAC2STR(dst), dialog_token, result, status_code);
136 anqp_resp_cb(wpa_s, dst, dialog_token, result, adv_proto, resp,
137 status_code);
138 interworking_next_anqp_fetch(wpa_s);
139 }
140
141
142 static int cred_with_roaming_consortium(struct wpa_supplicant *wpa_s)
143 {
144 struct wpa_cred *cred;
145
146 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
147 if (cred->roaming_consortium_len)
148 return 1;
149 if (cred->required_roaming_consortium_len)
150 return 1;
151 if (cred->num_roaming_consortiums)
152 return 1;
153 }
154 return 0;
155 }
156
157
158 static int cred_with_3gpp(struct wpa_supplicant *wpa_s)
159 {
160 struct wpa_cred *cred;
161
162 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
163 if (cred->pcsc || cred->imsi)
164 return 1;
165 }
166 return 0;
167 }
168
169
170 static int cred_with_nai_realm(struct wpa_supplicant *wpa_s)
171 {
172 struct wpa_cred *cred;
173
174 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
175 if (cred->pcsc || cred->imsi)
176 continue;
177 if (!cred->eap_method)
178 return 1;
179 if (cred->realm && cred->roaming_consortium_len == 0)
180 return 1;
181 }
182 return 0;
183 }
184
185
186 static int cred_with_domain(struct wpa_supplicant *wpa_s)
187 {
188 struct wpa_cred *cred;
189
190 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
191 if (cred->domain || cred->pcsc || cred->imsi ||
192 cred->roaming_partner)
193 return 1;
194 }
195 return 0;
196 }
197
198
199 #ifdef CONFIG_HS20
200
201 static int cred_with_min_backhaul(struct wpa_supplicant *wpa_s)
202 {
203 struct wpa_cred *cred;
204
205 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
206 if (cred->min_dl_bandwidth_home ||
207 cred->min_ul_bandwidth_home ||
208 cred->min_dl_bandwidth_roaming ||
209 cred->min_ul_bandwidth_roaming)
210 return 1;
211 }
212 return 0;
213 }
214
215
216 static int cred_with_conn_capab(struct wpa_supplicant *wpa_s)
217 {
218 struct wpa_cred *cred;
219
220 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
221 if (cred->num_req_conn_capab)
222 return 1;
223 }
224 return 0;
225 }
226
227 #endif /* CONFIG_HS20 */
228
229
230 static int additional_roaming_consortiums(struct wpa_bss *bss)
231 {
232 const u8 *ie;
233 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
234 if (ie == NULL || ie[1] == 0)
235 return 0;
236 return ie[2]; /* Number of ANQP OIs */
237 }
238
239
240 static void interworking_continue_anqp(void *eloop_ctx, void *sock_ctx)
241 {
242 struct wpa_supplicant *wpa_s = eloop_ctx;
243 interworking_next_anqp_fetch(wpa_s);
244 }
245
246
247 static int interworking_anqp_send_req(struct wpa_supplicant *wpa_s,
248 struct wpa_bss *bss)
249 {
250 struct wpabuf *buf;
251 int ret = 0;
252 int res;
253 u16 info_ids[8];
254 size_t num_info_ids = 0;
255 struct wpabuf *extra = NULL;
256 int all = wpa_s->fetch_all_anqp;
257
258 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: ANQP Query Request to " MACSTR,
259 MAC2STR(bss->bssid));
260 wpa_s->interworking_gas_bss = bss;
261
262 info_ids[num_info_ids++] = ANQP_CAPABILITY_LIST;
263 if (all) {
264 info_ids[num_info_ids++] = ANQP_VENUE_NAME;
265 info_ids[num_info_ids++] = ANQP_NETWORK_AUTH_TYPE;
266 }
267 if (all || (cred_with_roaming_consortium(wpa_s) &&
268 additional_roaming_consortiums(bss)))
269 info_ids[num_info_ids++] = ANQP_ROAMING_CONSORTIUM;
270 if (all)
271 info_ids[num_info_ids++] = ANQP_IP_ADDR_TYPE_AVAILABILITY;
272 if (all || cred_with_nai_realm(wpa_s))
273 info_ids[num_info_ids++] = ANQP_NAI_REALM;
274 if (all || cred_with_3gpp(wpa_s)) {
275 info_ids[num_info_ids++] = ANQP_3GPP_CELLULAR_NETWORK;
276 wpa_supplicant_scard_init(wpa_s, NULL);
277 }
278 if (all || cred_with_domain(wpa_s))
279 info_ids[num_info_ids++] = ANQP_DOMAIN_NAME;
280 wpa_hexdump(MSG_DEBUG, "Interworking: ANQP Query info",
281 (u8 *) info_ids, num_info_ids * 2);
282
283 #ifdef CONFIG_HS20
284 if (wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) {
285 u8 *len_pos;
286
287 extra = wpabuf_alloc(100);
288 if (!extra)
289 return -1;
290
291 len_pos = gas_anqp_add_element(extra, ANQP_VENDOR_SPECIFIC);
292 wpabuf_put_be24(extra, OUI_WFA);
293 wpabuf_put_u8(extra, HS20_ANQP_OUI_TYPE);
294 wpabuf_put_u8(extra, HS20_STYPE_QUERY_LIST);
295 wpabuf_put_u8(extra, 0); /* Reserved */
296 wpabuf_put_u8(extra, HS20_STYPE_CAPABILITY_LIST);
297 if (all)
298 wpabuf_put_u8(extra,
299 HS20_STYPE_OPERATOR_FRIENDLY_NAME);
300 if (all || cred_with_min_backhaul(wpa_s))
301 wpabuf_put_u8(extra, HS20_STYPE_WAN_METRICS);
302 if (all || cred_with_conn_capab(wpa_s))
303 wpabuf_put_u8(extra, HS20_STYPE_CONNECTION_CAPABILITY);
304 if (all)
305 wpabuf_put_u8(extra, HS20_STYPE_OPERATING_CLASS);
306 if (all) {
307 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_LIST);
308 wpabuf_put_u8(extra, HS20_STYPE_OSU_PROVIDERS_NAI_LIST);
309 }
310 gas_anqp_set_element_len(extra, len_pos);
311 }
312 #endif /* CONFIG_HS20 */
313
314 buf = anqp_build_req(info_ids, num_info_ids, extra);
315 wpabuf_free(extra);
316 if (buf == NULL)
317 return -1;
318
319 res = gas_query_req(wpa_s->gas, bss->bssid, bss->freq, 0, buf,
320 interworking_anqp_resp_cb, wpa_s);
321 if (res < 0) {
322 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
323 wpabuf_free(buf);
324 ret = -1;
325 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s,
326 NULL);
327 } else
328 wpa_msg(wpa_s, MSG_DEBUG,
329 "ANQP: Query started with dialog token %u", res);
330
331 return ret;
332 }
333
334
335 struct nai_realm_eap {
336 u8 method;
337 u8 inner_method;
338 enum nai_realm_eap_auth_inner_non_eap inner_non_eap;
339 u8 cred_type;
340 u8 tunneled_cred_type;
341 };
342
343 struct nai_realm {
344 u8 encoding;
345 char *realm;
346 u8 eap_count;
347 struct nai_realm_eap *eap;
348 };
349
350
351 static void nai_realm_free(struct nai_realm *realms, u16 count)
352 {
353 u16 i;
354
355 if (realms == NULL)
356 return;
357 for (i = 0; i < count; i++) {
358 os_free(realms[i].eap);
359 os_free(realms[i].realm);
360 }
361 os_free(realms);
362 }
363
364
365 static const u8 * nai_realm_parse_eap(struct nai_realm_eap *e, const u8 *pos,
366 const u8 *end)
367 {
368 u8 elen, auth_count, a;
369 const u8 *e_end;
370
371 if (end - pos < 3) {
372 wpa_printf(MSG_DEBUG, "No room for EAP Method fixed fields");
373 return NULL;
374 }
375
376 elen = *pos++;
377 if (elen > end - pos || elen < 2) {
378 wpa_printf(MSG_DEBUG, "No room for EAP Method subfield");
379 return NULL;
380 }
381 e_end = pos + elen;
382 e->method = *pos++;
383 auth_count = *pos++;
384 wpa_printf(MSG_DEBUG, "EAP Method: len=%u method=%u auth_count=%u",
385 elen, e->method, auth_count);
386
387 for (a = 0; a < auth_count; a++) {
388 u8 id, len;
389
390 if (end - pos < 2) {
391 wpa_printf(MSG_DEBUG,
392 "No room for Authentication Parameter subfield header");
393 return NULL;
394 }
395
396 id = *pos++;
397 len = *pos++;
398 if (len > end - pos) {
399 wpa_printf(MSG_DEBUG,
400 "No room for Authentication Parameter subfield");
401 return NULL;
402 }
403
404 switch (id) {
405 case NAI_REALM_EAP_AUTH_NON_EAP_INNER_AUTH:
406 if (len < 1)
407 break;
408 e->inner_non_eap = *pos;
409 if (e->method != EAP_TYPE_TTLS)
410 break;
411 switch (*pos) {
412 case NAI_REALM_INNER_NON_EAP_PAP:
413 wpa_printf(MSG_DEBUG, "EAP-TTLS/PAP");
414 break;
415 case NAI_REALM_INNER_NON_EAP_CHAP:
416 wpa_printf(MSG_DEBUG, "EAP-TTLS/CHAP");
417 break;
418 case NAI_REALM_INNER_NON_EAP_MSCHAP:
419 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAP");
420 break;
421 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
422 wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2");
423 break;
424 }
425 break;
426 case NAI_REALM_EAP_AUTH_INNER_AUTH_EAP_METHOD:
427 if (len < 1)
428 break;
429 e->inner_method = *pos;
430 wpa_printf(MSG_DEBUG, "Inner EAP method: %u",
431 e->inner_method);
432 break;
433 case NAI_REALM_EAP_AUTH_CRED_TYPE:
434 if (len < 1)
435 break;
436 e->cred_type = *pos;
437 wpa_printf(MSG_DEBUG, "Credential Type: %u",
438 e->cred_type);
439 break;
440 case NAI_REALM_EAP_AUTH_TUNNELED_CRED_TYPE:
441 if (len < 1)
442 break;
443 e->tunneled_cred_type = *pos;
444 wpa_printf(MSG_DEBUG, "Tunneled EAP Method Credential "
445 "Type: %u", e->tunneled_cred_type);
446 break;
447 default:
448 wpa_printf(MSG_DEBUG, "Unsupported Authentication "
449 "Parameter: id=%u len=%u", id, len);
450 wpa_hexdump(MSG_DEBUG, "Authentication Parameter "
451 "Value", pos, len);
452 break;
453 }
454
455 pos += len;
456 }
457
458 return e_end;
459 }
460
461
462 static const u8 * nai_realm_parse_realm(struct nai_realm *r, const u8 *pos,
463 const u8 *end)
464 {
465 u16 len;
466 const u8 *f_end;
467 u8 realm_len, e;
468
469 if (end - pos < 4) {
470 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
471 "fixed fields");
472 return NULL;
473 }
474
475 len = WPA_GET_LE16(pos); /* NAI Realm Data field Length */
476 pos += 2;
477 if (len > end - pos || len < 3) {
478 wpa_printf(MSG_DEBUG, "No room for NAI Realm Data "
479 "(len=%u; left=%u)",
480 len, (unsigned int) (end - pos));
481 return NULL;
482 }
483 f_end = pos + len;
484
485 r->encoding = *pos++;
486 realm_len = *pos++;
487 if (realm_len > f_end - pos) {
488 wpa_printf(MSG_DEBUG, "No room for NAI Realm "
489 "(len=%u; left=%u)",
490 realm_len, (unsigned int) (f_end - pos));
491 return NULL;
492 }
493 wpa_hexdump_ascii(MSG_DEBUG, "NAI Realm", pos, realm_len);
494 r->realm = dup_binstr(pos, realm_len);
495 if (r->realm == NULL)
496 return NULL;
497 pos += realm_len;
498
499 if (f_end - pos < 1) {
500 wpa_printf(MSG_DEBUG, "No room for EAP Method Count");
501 return NULL;
502 }
503 r->eap_count = *pos++;
504 wpa_printf(MSG_DEBUG, "EAP Count: %u", r->eap_count);
505 if (r->eap_count * 3 > f_end - pos) {
506 wpa_printf(MSG_DEBUG, "No room for EAP Methods");
507 return NULL;
508 }
509 r->eap = os_calloc(r->eap_count, sizeof(struct nai_realm_eap));
510 if (r->eap == NULL)
511 return NULL;
512
513 for (e = 0; e < r->eap_count; e++) {
514 pos = nai_realm_parse_eap(&r->eap[e], pos, f_end);
515 if (pos == NULL)
516 return NULL;
517 }
518
519 return f_end;
520 }
521
522
523 static struct nai_realm * nai_realm_parse(struct wpabuf *anqp, u16 *count)
524 {
525 struct nai_realm *realm;
526 const u8 *pos, *end;
527 u16 i, num;
528 size_t left;
529
530 if (anqp == NULL)
531 return NULL;
532 left = wpabuf_len(anqp);
533 if (left < 2)
534 return NULL;
535
536 pos = wpabuf_head_u8(anqp);
537 end = pos + left;
538 num = WPA_GET_LE16(pos);
539 wpa_printf(MSG_DEBUG, "NAI Realm Count: %u", num);
540 pos += 2;
541 left -= 2;
542
543 if (num > left / 5) {
544 wpa_printf(MSG_DEBUG, "Invalid NAI Realm Count %u - not "
545 "enough data (%u octets) for that many realms",
546 num, (unsigned int) left);
547 return NULL;
548 }
549
550 realm = os_calloc(num, sizeof(struct nai_realm));
551 if (realm == NULL)
552 return NULL;
553
554 for (i = 0; i < num; i++) {
555 pos = nai_realm_parse_realm(&realm[i], pos, end);
556 if (pos == NULL) {
557 nai_realm_free(realm, num);
558 return NULL;
559 }
560 }
561
562 *count = num;
563 return realm;
564 }
565
566
567 static int nai_realm_match(struct nai_realm *realm, const char *home_realm)
568 {
569 char *tmp, *pos, *end;
570 int match = 0;
571
572 if (realm->realm == NULL || home_realm == NULL)
573 return 0;
574
575 if (os_strchr(realm->realm, ';') == NULL)
576 return os_strcasecmp(realm->realm, home_realm) == 0;
577
578 tmp = os_strdup(realm->realm);
579 if (tmp == NULL)
580 return 0;
581
582 pos = tmp;
583 while (*pos) {
584 end = os_strchr(pos, ';');
585 if (end)
586 *end = '\0';
587 if (os_strcasecmp(pos, home_realm) == 0) {
588 match = 1;
589 break;
590 }
591 if (end == NULL)
592 break;
593 pos = end + 1;
594 }
595
596 os_free(tmp);
597
598 return match;
599 }
600
601
602 static int nai_realm_cred_username(struct wpa_supplicant *wpa_s,
603 struct nai_realm_eap *eap)
604 {
605 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
606 wpa_msg(wpa_s, MSG_DEBUG,
607 "nai-realm-cred-username: EAP method not supported: %d",
608 eap->method);
609 return 0; /* method not supported */
610 }
611
612 if (eap->method != EAP_TYPE_TTLS && eap->method != EAP_TYPE_PEAP &&
613 eap->method != EAP_TYPE_FAST) {
614 /* Only tunneled methods with username/password supported */
615 wpa_msg(wpa_s, MSG_DEBUG,
616 "nai-realm-cred-username: Method: %d is not TTLS, PEAP, or FAST",
617 eap->method);
618 return 0;
619 }
620
621 if (eap->method == EAP_TYPE_PEAP || eap->method == EAP_TYPE_FAST) {
622 if (eap->inner_method &&
623 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
624 wpa_msg(wpa_s, MSG_DEBUG,
625 "nai-realm-cred-username: PEAP/FAST: Inner method not supported: %d",
626 eap->inner_method);
627 return 0;
628 }
629 if (!eap->inner_method &&
630 eap_get_name(EAP_VENDOR_IETF, EAP_TYPE_MSCHAPV2) == NULL) {
631 wpa_msg(wpa_s, MSG_DEBUG,
632 "nai-realm-cred-username: MSCHAPv2 not supported");
633 return 0;
634 }
635 }
636
637 if (eap->method == EAP_TYPE_TTLS) {
638 if (eap->inner_method == 0 && eap->inner_non_eap == 0)
639 return 1; /* Assume TTLS/MSCHAPv2 is used */
640 if (eap->inner_method &&
641 eap_get_name(EAP_VENDOR_IETF, eap->inner_method) == NULL) {
642 wpa_msg(wpa_s, MSG_DEBUG,
643 "nai-realm-cred-username: TTLS, but inner not supported: %d",
644 eap->inner_method);
645 return 0;
646 }
647 if (eap->inner_non_eap &&
648 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_PAP &&
649 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_CHAP &&
650 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAP &&
651 eap->inner_non_eap != NAI_REALM_INNER_NON_EAP_MSCHAPV2) {
652 wpa_msg(wpa_s, MSG_DEBUG,
653 "nai-realm-cred-username: TTLS, inner-non-eap not supported: %d",
654 eap->inner_non_eap);
655 return 0;
656 }
657 }
658
659 if (eap->inner_method &&
660 eap->inner_method != EAP_TYPE_GTC &&
661 eap->inner_method != EAP_TYPE_MSCHAPV2) {
662 wpa_msg(wpa_s, MSG_DEBUG,
663 "nai-realm-cred-username: inner-method not GTC or MSCHAPv2: %d",
664 eap->inner_method);
665 return 0;
666 }
667
668 return 1;
669 }
670
671
672 static int nai_realm_cred_cert(struct wpa_supplicant *wpa_s,
673 struct nai_realm_eap *eap)
674 {
675 if (eap_get_name(EAP_VENDOR_IETF, eap->method) == NULL) {
676 wpa_msg(wpa_s, MSG_DEBUG,
677 "nai-realm-cred-cert: Method not supported: %d",
678 eap->method);
679 return 0; /* method not supported */
680 }
681
682 if (eap->method != EAP_TYPE_TLS) {
683 /* Only EAP-TLS supported for credential authentication */
684 wpa_msg(wpa_s, MSG_DEBUG,
685 "nai-realm-cred-cert: Method not TLS: %d",
686 eap->method);
687 return 0;
688 }
689
690 return 1;
691 }
692
693
694 static struct nai_realm_eap * nai_realm_find_eap(struct wpa_supplicant *wpa_s,
695 struct wpa_cred *cred,
696 struct nai_realm *realm)
697 {
698 u8 e;
699
700 if (cred->username == NULL ||
701 cred->username[0] == '\0' ||
702 ((cred->password == NULL ||
703 cred->password[0] == '\0') &&
704 (cred->private_key == NULL ||
705 cred->private_key[0] == '\0'))) {
706 wpa_msg(wpa_s, MSG_DEBUG,
707 "nai-realm-find-eap: incomplete cred info: username: %s password: %s private_key: %s",
708 cred->username ? cred->username : "NULL",
709 cred->password ? cred->password : "NULL",
710 cred->private_key ? cred->private_key : "NULL");
711 return NULL;
712 }
713
714 for (e = 0; e < realm->eap_count; e++) {
715 struct nai_realm_eap *eap = &realm->eap[e];
716 if (cred->password && cred->password[0] &&
717 nai_realm_cred_username(wpa_s, eap))
718 return eap;
719 if (cred->private_key && cred->private_key[0] &&
720 nai_realm_cred_cert(wpa_s, eap))
721 return eap;
722 }
723
724 return NULL;
725 }
726
727
728 #ifdef INTERWORKING_3GPP
729
730 static int plmn_id_match(struct wpabuf *anqp, const char *imsi, int mnc_len)
731 {
732 u8 plmn[3], plmn2[3];
733 const u8 *pos, *end;
734 u8 udhl;
735
736 /*
737 * See Annex A of 3GPP TS 24.234 v8.1.0 for description. The network
738 * operator is allowed to include only two digits of the MNC, so allow
739 * matches based on both two and three digit MNC assumptions. Since some
740 * SIM/USIM cards may not expose MNC length conveniently, we may be
741 * provided the default MNC length 3 here and as such, checking with MNC
742 * length 2 is justifiable even though 3GPP TS 24.234 does not mention
743 * that case. Anyway, MCC/MNC pair where both 2 and 3 digit MNC is used
744 * with otherwise matching values would not be good idea in general, so
745 * this should not result in selecting incorrect networks.
746 */
747 /* Match with 3 digit MNC */
748 plmn[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
749 plmn[1] = (imsi[2] - '0') | ((imsi[5] - '0') << 4);
750 plmn[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
751 /* Match with 2 digit MNC */
752 plmn2[0] = (imsi[0] - '0') | ((imsi[1] - '0') << 4);
753 plmn2[1] = (imsi[2] - '0') | 0xf0;
754 plmn2[2] = (imsi[3] - '0') | ((imsi[4] - '0') << 4);
755
756 if (anqp == NULL)
757 return 0;
758 pos = wpabuf_head_u8(anqp);
759 end = pos + wpabuf_len(anqp);
760 if (end - pos < 2)
761 return 0;
762 if (*pos != 0) {
763 wpa_printf(MSG_DEBUG, "Unsupported GUD version 0x%x", *pos);
764 return 0;
765 }
766 pos++;
767 udhl = *pos++;
768 if (udhl > end - pos) {
769 wpa_printf(MSG_DEBUG, "Invalid UDHL");
770 return 0;
771 }
772 end = pos + udhl;
773
774 wpa_printf(MSG_DEBUG, "Interworking: Matching against MCC/MNC alternatives: %02x:%02x:%02x or %02x:%02x:%02x (IMSI %s, MNC length %d)",
775 plmn[0], plmn[1], plmn[2], plmn2[0], plmn2[1], plmn2[2],
776 imsi, mnc_len);
777
778 while (end - pos >= 2) {
779 u8 iei, len;
780 const u8 *l_end;
781 iei = *pos++;
782 len = *pos++ & 0x7f;
783 if (len > end - pos)
784 break;
785 l_end = pos + len;
786
787 if (iei == 0 && len > 0) {
788 /* PLMN List */
789 u8 num, i;
790 wpa_hexdump(MSG_DEBUG, "Interworking: PLMN List information element",
791 pos, len);
792 num = *pos++;
793 for (i = 0; i < num; i++) {
794 if (l_end - pos < 3)
795 break;
796 if (os_memcmp(pos, plmn, 3) == 0 ||
797 os_memcmp(pos, plmn2, 3) == 0)
798 return 1; /* Found matching PLMN */
799 pos += 3;
800 }
801 } else {
802 wpa_hexdump(MSG_DEBUG, "Interworking: Unrecognized 3GPP information element",
803 pos, len);
804 }
805
806 pos = l_end;
807 }
808
809 return 0;
810 }
811
812
813 static int build_root_nai(char *nai, size_t nai_len, const char *imsi,
814 size_t mnc_len, char prefix)
815 {
816 const char *sep, *msin;
817 char *end, *pos;
818 size_t msin_len, plmn_len;
819
820 /*
821 * TS 23.003, Clause 14 (3GPP to WLAN Interworking)
822 * Root NAI:
823 * <aka:0|sim:1><IMSI>@wlan.mnc<MNC>.mcc<MCC>.3gppnetwork.org
824 * <MNC> is zero-padded to three digits in case two-digit MNC is used
825 */
826
827 if (imsi == NULL || os_strlen(imsi) > 16) {
828 wpa_printf(MSG_DEBUG, "No valid IMSI available");
829 return -1;
830 }
831 sep = os_strchr(imsi, '-');
832 if (sep) {
833 plmn_len = sep - imsi;
834 msin = sep + 1;
835 } else if (mnc_len && os_strlen(imsi) >= 3 + mnc_len) {
836 plmn_len = 3 + mnc_len;
837 msin = imsi + plmn_len;
838 } else
839 return -1;
840 if (plmn_len != 5 && plmn_len != 6)
841 return -1;
842 msin_len = os_strlen(msin);
843
844 pos = nai;
845 end = nai + nai_len;
846 if (prefix)
847 *pos++ = prefix;
848 os_memcpy(pos, imsi, plmn_len);
849 pos += plmn_len;
850 os_memcpy(pos, msin, msin_len);
851 pos += msin_len;
852 pos += os_snprintf(pos, end - pos, "@wlan.mnc");
853 if (plmn_len == 5) {
854 *pos++ = '0';
855 *pos++ = imsi[3];
856 *pos++ = imsi[4];
857 } else {
858 *pos++ = imsi[3];
859 *pos++ = imsi[4];
860 *pos++ = imsi[5];
861 }
862 os_snprintf(pos, end - pos, ".mcc%c%c%c.3gppnetwork.org",
863 imsi[0], imsi[1], imsi[2]);
864
865 return 0;
866 }
867
868
869 static int set_root_nai(struct wpa_ssid *ssid, const char *imsi, char prefix)
870 {
871 char nai[100];
872 if (build_root_nai(nai, sizeof(nai), imsi, 0, prefix) < 0)
873 return -1;
874 return wpa_config_set_quoted(ssid, "identity", nai);
875 }
876
877 #endif /* INTERWORKING_3GPP */
878
879
880 static int already_connected(struct wpa_supplicant *wpa_s,
881 struct wpa_cred *cred, struct wpa_bss *bss)
882 {
883 struct wpa_ssid *ssid, *sel_ssid;
884 struct wpa_bss *selected;
885
886 if (wpa_s->wpa_state < WPA_ASSOCIATED || wpa_s->current_ssid == NULL)
887 return 0;
888
889 ssid = wpa_s->current_ssid;
890 if (ssid->parent_cred != cred)
891 return 0;
892
893 if (ssid->ssid_len != bss->ssid_len ||
894 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
895 return 0;
896
897 sel_ssid = NULL;
898 selected = wpa_supplicant_pick_network(wpa_s, &sel_ssid);
899 if (selected && sel_ssid && sel_ssid->priority > ssid->priority)
900 return 0; /* higher priority network in scan results */
901
902 return 1;
903 }
904
905
906 static void remove_duplicate_network(struct wpa_supplicant *wpa_s,
907 struct wpa_cred *cred,
908 struct wpa_bss *bss)
909 {
910 struct wpa_ssid *ssid;
911
912 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
913 if (ssid->parent_cred != cred)
914 continue;
915 if (ssid->ssid_len != bss->ssid_len ||
916 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) != 0)
917 continue;
918
919 break;
920 }
921
922 if (ssid == NULL)
923 return;
924
925 wpa_printf(MSG_DEBUG, "Interworking: Remove duplicate network entry for the same credential");
926
927 if (ssid == wpa_s->current_ssid) {
928 wpa_sm_set_config(wpa_s->wpa, NULL);
929 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
930 wpa_s->own_disconnect_req = 1;
931 wpa_supplicant_deauthenticate(wpa_s,
932 WLAN_REASON_DEAUTH_LEAVING);
933 }
934
935 wpas_notify_network_removed(wpa_s, ssid);
936 wpa_config_remove_network(wpa_s->conf, ssid->id);
937 }
938
939
940 static int interworking_set_hs20_params(struct wpa_supplicant *wpa_s,
941 struct wpa_ssid *ssid)
942 {
943 const char *key_mgmt = NULL;
944 #ifdef CONFIG_IEEE80211R
945 int res;
946 struct wpa_driver_capa capa;
947
948 res = wpa_drv_get_capa(wpa_s, &capa);
949 if (res == 0 && capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_FT) {
950 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
951 "WPA-EAP WPA-EAP-SHA256 FT-EAP" :
952 "WPA-EAP FT-EAP";
953 }
954 #endif /* CONFIG_IEEE80211R */
955
956 if (!key_mgmt)
957 key_mgmt = wpa_s->conf->pmf != NO_MGMT_FRAME_PROTECTION ?
958 "WPA-EAP WPA-EAP-SHA256" : "WPA-EAP";
959 if (wpa_config_set(ssid, "key_mgmt", key_mgmt, 0) < 0 ||
960 wpa_config_set(ssid, "proto", "RSN", 0) < 0 ||
961 wpa_config_set(ssid, "pairwise", "CCMP", 0) < 0)
962 return -1;
963 return 0;
964 }
965
966
967 static int interworking_connect_3gpp(struct wpa_supplicant *wpa_s,
968 struct wpa_cred *cred,
969 struct wpa_bss *bss, int only_add)
970 {
971 #ifdef INTERWORKING_3GPP
972 struct wpa_ssid *ssid;
973 int eap_type;
974 int res;
975 char prefix;
976
977 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL)
978 return -1;
979
980 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
981 " (3GPP)", MAC2STR(bss->bssid));
982
983 if (already_connected(wpa_s, cred, bss)) {
984 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
985 MAC2STR(bss->bssid));
986 return wpa_s->current_ssid->id;
987 }
988
989 remove_duplicate_network(wpa_s, cred, bss);
990
991 ssid = wpa_config_add_network(wpa_s->conf);
992 if (ssid == NULL)
993 return -1;
994 ssid->parent_cred = cred;
995
996 wpas_notify_network_added(wpa_s, ssid);
997 wpa_config_set_network_defaults(ssid);
998 ssid->priority = cred->priority;
999 ssid->temporary = 1;
1000 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1001 if (ssid->ssid == NULL)
1002 goto fail;
1003 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1004 ssid->ssid_len = bss->ssid_len;
1005 ssid->eap.sim_num = cred->sim_num;
1006
1007 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1008 goto fail;
1009
1010 eap_type = EAP_TYPE_SIM;
1011 if (cred->pcsc && wpa_s->scard && scard_supports_umts(wpa_s->scard))
1012 eap_type = EAP_TYPE_AKA;
1013 if (cred->eap_method && cred->eap_method[0].vendor == EAP_VENDOR_IETF) {
1014 if (cred->eap_method[0].method == EAP_TYPE_SIM ||
1015 cred->eap_method[0].method == EAP_TYPE_AKA ||
1016 cred->eap_method[0].method == EAP_TYPE_AKA_PRIME)
1017 eap_type = cred->eap_method[0].method;
1018 }
1019
1020 switch (eap_type) {
1021 case EAP_TYPE_SIM:
1022 prefix = '1';
1023 res = wpa_config_set(ssid, "eap", "SIM", 0);
1024 break;
1025 case EAP_TYPE_AKA:
1026 prefix = '0';
1027 res = wpa_config_set(ssid, "eap", "AKA", 0);
1028 break;
1029 case EAP_TYPE_AKA_PRIME:
1030 prefix = '6';
1031 res = wpa_config_set(ssid, "eap", "AKA'", 0);
1032 break;
1033 default:
1034 res = -1;
1035 break;
1036 }
1037 if (res < 0) {
1038 wpa_msg(wpa_s, MSG_DEBUG,
1039 "Selected EAP method (%d) not supported", eap_type);
1040 goto fail;
1041 }
1042
1043 if (!cred->pcsc && set_root_nai(ssid, cred->imsi, prefix) < 0) {
1044 wpa_msg(wpa_s, MSG_DEBUG, "Failed to set Root NAI");
1045 goto fail;
1046 }
1047
1048 if (cred->milenage && cred->milenage[0]) {
1049 if (wpa_config_set_quoted(ssid, "password",
1050 cred->milenage) < 0)
1051 goto fail;
1052 } else if (cred->pcsc) {
1053 if (wpa_config_set_quoted(ssid, "pcsc", "") < 0)
1054 goto fail;
1055 if (wpa_s->conf->pcsc_pin &&
1056 wpa_config_set_quoted(ssid, "pin", wpa_s->conf->pcsc_pin)
1057 < 0)
1058 goto fail;
1059 }
1060
1061 wpa_s->next_ssid = ssid;
1062 wpa_config_update_prio_list(wpa_s->conf);
1063 if (!only_add)
1064 interworking_reconnect(wpa_s);
1065
1066 return ssid->id;
1067
1068 fail:
1069 wpas_notify_network_removed(wpa_s, ssid);
1070 wpa_config_remove_network(wpa_s->conf, ssid->id);
1071 #endif /* INTERWORKING_3GPP */
1072 return -1;
1073 }
1074
1075
1076 static int roaming_consortium_element_match(const u8 *ie, const u8 *rc_id,
1077 size_t rc_len)
1078 {
1079 const u8 *pos, *end;
1080 u8 lens;
1081
1082 if (ie == NULL)
1083 return 0;
1084
1085 pos = ie + 2;
1086 end = ie + 2 + ie[1];
1087
1088 /* Roaming Consortium element:
1089 * Number of ANQP OIs
1090 * OI #1 and #2 lengths
1091 * OI #1, [OI #2], [OI #3]
1092 */
1093
1094 if (end - pos < 2)
1095 return 0;
1096
1097 pos++; /* skip Number of ANQP OIs */
1098 lens = *pos++;
1099 if ((lens & 0x0f) + (lens >> 4) > end - pos)
1100 return 0;
1101
1102 if ((lens & 0x0f) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1103 return 1;
1104 pos += lens & 0x0f;
1105
1106 if ((lens >> 4) == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1107 return 1;
1108 pos += lens >> 4;
1109
1110 if (pos < end && (size_t) (end - pos) == rc_len &&
1111 os_memcmp(pos, rc_id, rc_len) == 0)
1112 return 1;
1113
1114 return 0;
1115 }
1116
1117
1118 static int roaming_consortium_anqp_match(const struct wpabuf *anqp,
1119 const u8 *rc_id, size_t rc_len)
1120 {
1121 const u8 *pos, *end;
1122 u8 len;
1123
1124 if (anqp == NULL)
1125 return 0;
1126
1127 pos = wpabuf_head(anqp);
1128 end = pos + wpabuf_len(anqp);
1129
1130 /* Set of <OI Length, OI> duples */
1131 while (pos < end) {
1132 len = *pos++;
1133 if (len > end - pos)
1134 break;
1135 if (len == rc_len && os_memcmp(pos, rc_id, rc_len) == 0)
1136 return 1;
1137 pos += len;
1138 }
1139
1140 return 0;
1141 }
1142
1143
1144 static int roaming_consortium_match(const u8 *ie, const struct wpabuf *anqp,
1145 const u8 *rc_id, size_t rc_len)
1146 {
1147 return roaming_consortium_element_match(ie, rc_id, rc_len) ||
1148 roaming_consortium_anqp_match(anqp, rc_id, rc_len);
1149 }
1150
1151
1152 static int cred_roaming_consortiums_match(const u8 *ie,
1153 const struct wpabuf *anqp,
1154 const struct wpa_cred *cred)
1155 {
1156 unsigned int i;
1157
1158 for (i = 0; i < cred->num_roaming_consortiums; i++) {
1159 if (roaming_consortium_match(ie, anqp,
1160 cred->roaming_consortiums[i],
1161 cred->roaming_consortiums_len[i]))
1162 return 1;
1163 }
1164
1165 return 0;
1166 }
1167
1168
1169 static int cred_no_required_oi_match(struct wpa_cred *cred, struct wpa_bss *bss)
1170 {
1171 const u8 *ie;
1172
1173 if (cred->required_roaming_consortium_len == 0)
1174 return 0;
1175
1176 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1177
1178 if (ie == NULL &&
1179 (bss->anqp == NULL || bss->anqp->roaming_consortium == NULL))
1180 return 1;
1181
1182 return !roaming_consortium_match(ie,
1183 bss->anqp ?
1184 bss->anqp->roaming_consortium : NULL,
1185 cred->required_roaming_consortium,
1186 cred->required_roaming_consortium_len);
1187 }
1188
1189
1190 static int cred_excluded_ssid(struct wpa_cred *cred, struct wpa_bss *bss)
1191 {
1192 size_t i;
1193
1194 if (!cred->excluded_ssid)
1195 return 0;
1196
1197 for (i = 0; i < cred->num_excluded_ssid; i++) {
1198 struct excluded_ssid *e = &cred->excluded_ssid[i];
1199 if (bss->ssid_len == e->ssid_len &&
1200 os_memcmp(bss->ssid, e->ssid, e->ssid_len) == 0)
1201 return 1;
1202 }
1203
1204 return 0;
1205 }
1206
1207
1208 static int cred_below_min_backhaul(struct wpa_supplicant *wpa_s,
1209 struct wpa_cred *cred, struct wpa_bss *bss)
1210 {
1211 #ifdef CONFIG_HS20
1212 int res;
1213 unsigned int dl_bandwidth, ul_bandwidth;
1214 const u8 *wan;
1215 u8 wan_info, dl_load, ul_load;
1216 u16 lmd;
1217 u32 ul_speed, dl_speed;
1218
1219 if (!cred->min_dl_bandwidth_home &&
1220 !cred->min_ul_bandwidth_home &&
1221 !cred->min_dl_bandwidth_roaming &&
1222 !cred->min_ul_bandwidth_roaming)
1223 return 0; /* No bandwidth constraint specified */
1224
1225 if (bss->anqp == NULL || bss->anqp->hs20_wan_metrics == NULL)
1226 return 0; /* No WAN Metrics known - ignore constraint */
1227
1228 wan = wpabuf_head(bss->anqp->hs20_wan_metrics);
1229 wan_info = wan[0];
1230 if (wan_info & BIT(3))
1231 return 1; /* WAN link at capacity */
1232 lmd = WPA_GET_LE16(wan + 11);
1233 if (lmd == 0)
1234 return 0; /* Downlink/Uplink Load was not measured */
1235 dl_speed = WPA_GET_LE32(wan + 1);
1236 ul_speed = WPA_GET_LE32(wan + 5);
1237 dl_load = wan[9];
1238 ul_load = wan[10];
1239
1240 if (dl_speed >= 0xffffff)
1241 dl_bandwidth = dl_speed / 255 * (255 - dl_load);
1242 else
1243 dl_bandwidth = dl_speed * (255 - dl_load) / 255;
1244
1245 if (ul_speed >= 0xffffff)
1246 ul_bandwidth = ul_speed / 255 * (255 - ul_load);
1247 else
1248 ul_bandwidth = ul_speed * (255 - ul_load) / 255;
1249
1250 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1251 bss->anqp->domain_name : NULL);
1252 if (res > 0) {
1253 if (cred->min_dl_bandwidth_home > dl_bandwidth)
1254 return 1;
1255 if (cred->min_ul_bandwidth_home > ul_bandwidth)
1256 return 1;
1257 } else {
1258 if (cred->min_dl_bandwidth_roaming > dl_bandwidth)
1259 return 1;
1260 if (cred->min_ul_bandwidth_roaming > ul_bandwidth)
1261 return 1;
1262 }
1263 #endif /* CONFIG_HS20 */
1264
1265 return 0;
1266 }
1267
1268
1269 static int cred_over_max_bss_load(struct wpa_supplicant *wpa_s,
1270 struct wpa_cred *cred, struct wpa_bss *bss)
1271 {
1272 const u8 *ie;
1273 int res;
1274
1275 if (!cred->max_bss_load)
1276 return 0; /* No BSS Load constraint specified */
1277
1278 ie = wpa_bss_get_ie(bss, WLAN_EID_BSS_LOAD);
1279 if (ie == NULL || ie[1] < 3)
1280 return 0; /* No BSS Load advertised */
1281
1282 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1283 bss->anqp->domain_name : NULL);
1284 if (res <= 0)
1285 return 0; /* Not a home network */
1286
1287 return ie[4] > cred->max_bss_load;
1288 }
1289
1290
1291 #ifdef CONFIG_HS20
1292
1293 static int has_proto_match(const u8 *pos, const u8 *end, u8 proto)
1294 {
1295 while (end - pos >= 4) {
1296 if (pos[0] == proto && pos[3] == 1 /* Open */)
1297 return 1;
1298 pos += 4;
1299 }
1300
1301 return 0;
1302 }
1303
1304
1305 static int has_proto_port_match(const u8 *pos, const u8 *end, u8 proto,
1306 u16 port)
1307 {
1308 while (end - pos >= 4) {
1309 if (pos[0] == proto && WPA_GET_LE16(&pos[1]) == port &&
1310 pos[3] == 1 /* Open */)
1311 return 1;
1312 pos += 4;
1313 }
1314
1315 return 0;
1316 }
1317
1318 #endif /* CONFIG_HS20 */
1319
1320
1321 static int cred_conn_capab_missing(struct wpa_supplicant *wpa_s,
1322 struct wpa_cred *cred, struct wpa_bss *bss)
1323 {
1324 #ifdef CONFIG_HS20
1325 int res;
1326 const u8 *capab, *end;
1327 unsigned int i, j;
1328 int *ports;
1329
1330 if (!cred->num_req_conn_capab)
1331 return 0; /* No connection capability constraint specified */
1332
1333 if (bss->anqp == NULL || bss->anqp->hs20_connection_capability == NULL)
1334 return 0; /* No Connection Capability known - ignore constraint
1335 */
1336
1337 res = interworking_home_sp_cred(wpa_s, cred, bss->anqp ?
1338 bss->anqp->domain_name : NULL);
1339 if (res > 0)
1340 return 0; /* No constraint in home network */
1341
1342 capab = wpabuf_head(bss->anqp->hs20_connection_capability);
1343 end = capab + wpabuf_len(bss->anqp->hs20_connection_capability);
1344
1345 for (i = 0; i < cred->num_req_conn_capab; i++) {
1346 ports = cred->req_conn_capab_port[i];
1347 if (!ports) {
1348 if (!has_proto_match(capab, end,
1349 cred->req_conn_capab_proto[i]))
1350 return 1;
1351 } else {
1352 for (j = 0; ports[j] > -1; j++) {
1353 if (!has_proto_port_match(
1354 capab, end,
1355 cred->req_conn_capab_proto[i],
1356 ports[j]))
1357 return 1;
1358 }
1359 }
1360 }
1361 #endif /* CONFIG_HS20 */
1362
1363 return 0;
1364 }
1365
1366
1367 static struct wpa_cred * interworking_credentials_available_roaming_consortium(
1368 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1369 int *excluded)
1370 {
1371 struct wpa_cred *cred, *selected = NULL;
1372 const u8 *ie;
1373 const struct wpabuf *anqp;
1374 int is_excluded = 0;
1375
1376 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1377 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL;
1378
1379 if (!ie && !anqp)
1380 return NULL;
1381
1382 if (wpa_s->conf->cred == NULL)
1383 return NULL;
1384
1385 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1386 if (cred->roaming_consortium_len == 0 &&
1387 cred->num_roaming_consortiums == 0)
1388 continue;
1389
1390 if ((cred->roaming_consortium_len == 0 ||
1391 !roaming_consortium_match(ie, anqp,
1392 cred->roaming_consortium,
1393 cred->roaming_consortium_len)) &&
1394 !cred_roaming_consortiums_match(ie, anqp, cred))
1395 continue;
1396
1397 if (cred_no_required_oi_match(cred, bss))
1398 continue;
1399 if (!ignore_bw && cred_below_min_backhaul(wpa_s, cred, bss))
1400 continue;
1401 if (!ignore_bw && cred_over_max_bss_load(wpa_s, cred, bss))
1402 continue;
1403 if (!ignore_bw && cred_conn_capab_missing(wpa_s, cred, bss))
1404 continue;
1405 if (cred_excluded_ssid(cred, bss)) {
1406 if (excluded == NULL)
1407 continue;
1408 if (selected == NULL) {
1409 selected = cred;
1410 is_excluded = 1;
1411 }
1412 } else {
1413 if (selected == NULL || is_excluded ||
1414 cred_prio_cmp(selected, cred) < 0) {
1415 selected = cred;
1416 is_excluded = 0;
1417 }
1418 }
1419 }
1420
1421 if (excluded)
1422 *excluded = is_excluded;
1423
1424 return selected;
1425 }
1426
1427
1428 static int interworking_set_eap_params(struct wpa_ssid *ssid,
1429 struct wpa_cred *cred, int ttls)
1430 {
1431 if (cred->eap_method) {
1432 ttls = cred->eap_method->vendor == EAP_VENDOR_IETF &&
1433 cred->eap_method->method == EAP_TYPE_TTLS;
1434
1435 os_free(ssid->eap.eap_methods);
1436 ssid->eap.eap_methods =
1437 os_malloc(sizeof(struct eap_method_type) * 2);
1438 if (ssid->eap.eap_methods == NULL)
1439 return -1;
1440 os_memcpy(ssid->eap.eap_methods, cred->eap_method,
1441 sizeof(*cred->eap_method));
1442 ssid->eap.eap_methods[1].vendor = EAP_VENDOR_IETF;
1443 ssid->eap.eap_methods[1].method = EAP_TYPE_NONE;
1444 }
1445
1446 if (ttls && cred->username && cred->username[0]) {
1447 const char *pos;
1448 char *anon;
1449 /* Use anonymous NAI in Phase 1 */
1450 pos = os_strchr(cred->username, '@');
1451 if (pos) {
1452 size_t buflen = 9 + os_strlen(pos) + 1;
1453 anon = os_malloc(buflen);
1454 if (anon == NULL)
1455 return -1;
1456 os_snprintf(anon, buflen, "anonymous%s", pos);
1457 } else if (cred->realm) {
1458 size_t buflen = 10 + os_strlen(cred->realm) + 1;
1459 anon = os_malloc(buflen);
1460 if (anon == NULL)
1461 return -1;
1462 os_snprintf(anon, buflen, "anonymous@%s", cred->realm);
1463 } else {
1464 anon = os_strdup("anonymous");
1465 if (anon == NULL)
1466 return -1;
1467 }
1468 if (wpa_config_set_quoted(ssid, "anonymous_identity", anon) <
1469 0) {
1470 os_free(anon);
1471 return -1;
1472 }
1473 os_free(anon);
1474 }
1475
1476 if (!ttls && cred->username && cred->username[0] && cred->realm &&
1477 !os_strchr(cred->username, '@')) {
1478 char *id;
1479 size_t buflen;
1480 int res;
1481
1482 buflen = os_strlen(cred->username) + 1 +
1483 os_strlen(cred->realm) + 1;
1484
1485 id = os_malloc(buflen);
1486 if (!id)
1487 return -1;
1488 os_snprintf(id, buflen, "%s@%s", cred->username, cred->realm);
1489 res = wpa_config_set_quoted(ssid, "identity", id);
1490 os_free(id);
1491 if (res < 0)
1492 return -1;
1493 } else if (cred->username && cred->username[0] &&
1494 wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
1495 return -1;
1496
1497 if (cred->password && cred->password[0]) {
1498 if (cred->ext_password &&
1499 wpa_config_set(ssid, "password", cred->password, 0) < 0)
1500 return -1;
1501 if (!cred->ext_password &&
1502 wpa_config_set_quoted(ssid, "password", cred->password) <
1503 0)
1504 return -1;
1505 }
1506
1507 if (cred->client_cert && cred->client_cert[0] &&
1508 wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)
1509 return -1;
1510
1511 #ifdef ANDROID
1512 if (cred->private_key &&
1513 os_strncmp(cred->private_key, "keystore://", 11) == 0) {
1514 /* Use OpenSSL engine configuration for Android keystore */
1515 if (wpa_config_set_quoted(ssid, "engine_id", "keystore") < 0 ||
1516 wpa_config_set_quoted(ssid, "key_id",
1517 cred->private_key + 11) < 0 ||
1518 wpa_config_set(ssid, "engine", "1", 0) < 0)
1519 return -1;
1520 } else
1521 #endif /* ANDROID */
1522 if (cred->private_key && cred->private_key[0] &&
1523 wpa_config_set_quoted(ssid, "private_key", cred->private_key) < 0)
1524 return -1;
1525
1526 if (cred->private_key_passwd && cred->private_key_passwd[0] &&
1527 wpa_config_set_quoted(ssid, "private_key_passwd",
1528 cred->private_key_passwd) < 0)
1529 return -1;
1530
1531 if (cred->phase1) {
1532 os_free(ssid->eap.phase1);
1533 ssid->eap.phase1 = os_strdup(cred->phase1);
1534 }
1535 if (cred->phase2) {
1536 os_free(ssid->eap.phase2);
1537 ssid->eap.phase2 = os_strdup(cred->phase2);
1538 }
1539
1540 if (cred->ca_cert && cred->ca_cert[0] &&
1541 wpa_config_set_quoted(ssid, "ca_cert", cred->ca_cert) < 0)
1542 return -1;
1543
1544 if (cred->domain_suffix_match && cred->domain_suffix_match[0] &&
1545 wpa_config_set_quoted(ssid, "domain_suffix_match",
1546 cred->domain_suffix_match) < 0)
1547 return -1;
1548
1549 ssid->eap.ocsp = cred->ocsp;
1550
1551 return 0;
1552 }
1553
1554
1555 static int interworking_connect_roaming_consortium(
1556 struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
1557 struct wpa_bss *bss, int only_add)
1558 {
1559 struct wpa_ssid *ssid;
1560 const u8 *ie;
1561 const struct wpabuf *anqp;
1562 unsigned int i;
1563
1564 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR
1565 " based on roaming consortium match", MAC2STR(bss->bssid));
1566
1567 if (already_connected(wpa_s, cred, bss)) {
1568 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1569 MAC2STR(bss->bssid));
1570 return wpa_s->current_ssid->id;
1571 }
1572
1573 remove_duplicate_network(wpa_s, cred, bss);
1574
1575 ssid = wpa_config_add_network(wpa_s->conf);
1576 if (ssid == NULL)
1577 return -1;
1578 ssid->parent_cred = cred;
1579 wpas_notify_network_added(wpa_s, ssid);
1580 wpa_config_set_network_defaults(ssid);
1581 ssid->priority = cred->priority;
1582 ssid->temporary = 1;
1583 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1584 if (ssid->ssid == NULL)
1585 goto fail;
1586 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1587 ssid->ssid_len = bss->ssid_len;
1588
1589 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1590 goto fail;
1591
1592 ie = wpa_bss_get_ie(bss, WLAN_EID_ROAMING_CONSORTIUM);
1593 anqp = bss->anqp ? bss->anqp->roaming_consortium : NULL;
1594 for (i = 0; (ie || anqp) && i < cred->num_roaming_consortiums; i++) {
1595 if (!roaming_consortium_match(
1596 ie, anqp, cred->roaming_consortiums[i],
1597 cred->roaming_consortiums_len[i]))
1598 continue;
1599
1600 ssid->roaming_consortium_selection =
1601 os_malloc(cred->roaming_consortiums_len[i]);
1602 if (!ssid->roaming_consortium_selection)
1603 goto fail;
1604 os_memcpy(ssid->roaming_consortium_selection,
1605 cred->roaming_consortiums[i],
1606 cred->roaming_consortiums_len[i]);
1607 ssid->roaming_consortium_selection_len =
1608 cred->roaming_consortiums_len[i];
1609 break;
1610 }
1611
1612 if (cred->eap_method == NULL) {
1613 wpa_msg(wpa_s, MSG_DEBUG,
1614 "Interworking: No EAP method set for credential using roaming consortium");
1615 goto fail;
1616 }
1617
1618 if (interworking_set_eap_params(
1619 ssid, cred,
1620 cred->eap_method->vendor == EAP_VENDOR_IETF &&
1621 cred->eap_method->method == EAP_TYPE_TTLS) < 0)
1622 goto fail;
1623
1624 wpa_s->next_ssid = ssid;
1625 wpa_config_update_prio_list(wpa_s->conf);
1626 if (!only_add)
1627 interworking_reconnect(wpa_s);
1628
1629 return ssid->id;
1630
1631 fail:
1632 wpas_notify_network_removed(wpa_s, ssid);
1633 wpa_config_remove_network(wpa_s->conf, ssid->id);
1634 return -1;
1635 }
1636
1637
1638 int interworking_connect(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
1639 int only_add)
1640 {
1641 struct wpa_cred *cred, *cred_rc, *cred_3gpp;
1642 struct wpa_ssid *ssid;
1643 struct nai_realm *realm;
1644 struct nai_realm_eap *eap = NULL;
1645 u16 count, i;
1646 char buf[100];
1647 int excluded = 0, *excl = &excluded;
1648 const char *name;
1649
1650 if (wpa_s->conf->cred == NULL || bss == NULL)
1651 return -1;
1652 if (disallowed_bssid(wpa_s, bss->bssid) ||
1653 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
1654 wpa_msg(wpa_s, MSG_DEBUG,
1655 "Interworking: Reject connection to disallowed BSS "
1656 MACSTR, MAC2STR(bss->bssid));
1657 return -1;
1658 }
1659
1660 wpa_printf(MSG_DEBUG, "Interworking: Considering BSS " MACSTR
1661 " for connection",
1662 MAC2STR(bss->bssid));
1663
1664 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
1665 /*
1666 * We currently support only HS 2.0 networks and those are
1667 * required to use WPA2-Enterprise.
1668 */
1669 wpa_msg(wpa_s, MSG_DEBUG,
1670 "Interworking: Network does not use RSN");
1671 return -1;
1672 }
1673
1674 cred_rc = interworking_credentials_available_roaming_consortium(
1675 wpa_s, bss, 0, excl);
1676 if (cred_rc) {
1677 wpa_msg(wpa_s, MSG_DEBUG,
1678 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d",
1679 cred_rc->priority, cred_rc->sp_priority);
1680 if (excl && !(*excl))
1681 excl = NULL;
1682 }
1683
1684 cred = interworking_credentials_available_realm(wpa_s, bss, 0, excl);
1685 if (cred) {
1686 wpa_msg(wpa_s, MSG_DEBUG,
1687 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d",
1688 cred->priority, cred->sp_priority);
1689 if (excl && !(*excl))
1690 excl = NULL;
1691 }
1692
1693 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss, 0,
1694 excl);
1695 if (cred_3gpp) {
1696 wpa_msg(wpa_s, MSG_DEBUG,
1697 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d",
1698 cred_3gpp->priority, cred_3gpp->sp_priority);
1699 if (excl && !(*excl))
1700 excl = NULL;
1701 }
1702
1703 if (!cred_rc && !cred && !cred_3gpp) {
1704 wpa_msg(wpa_s, MSG_DEBUG,
1705 "Interworking: No full credential matches - consider options without BW(etc.) limits");
1706 cred_rc = interworking_credentials_available_roaming_consortium(
1707 wpa_s, bss, 1, excl);
1708 if (cred_rc) {
1709 wpa_msg(wpa_s, MSG_DEBUG,
1710 "Interworking: Highest roaming consortium matching credential priority %d sp_priority %d (ignore BW)",
1711 cred_rc->priority, cred_rc->sp_priority);
1712 if (excl && !(*excl))
1713 excl = NULL;
1714 }
1715
1716 cred = interworking_credentials_available_realm(wpa_s, bss, 1,
1717 excl);
1718 if (cred) {
1719 wpa_msg(wpa_s, MSG_DEBUG,
1720 "Interworking: Highest NAI Realm list matching credential priority %d sp_priority %d (ignore BW)",
1721 cred->priority, cred->sp_priority);
1722 if (excl && !(*excl))
1723 excl = NULL;
1724 }
1725
1726 cred_3gpp = interworking_credentials_available_3gpp(wpa_s, bss,
1727 1, excl);
1728 if (cred_3gpp) {
1729 wpa_msg(wpa_s, MSG_DEBUG,
1730 "Interworking: Highest 3GPP matching credential priority %d sp_priority %d (ignore BW)",
1731 cred_3gpp->priority, cred_3gpp->sp_priority);
1732 if (excl && !(*excl))
1733 excl = NULL;
1734 }
1735 }
1736
1737 if (cred_rc &&
1738 (cred == NULL || cred_prio_cmp(cred_rc, cred) >= 0) &&
1739 (cred_3gpp == NULL || cred_prio_cmp(cred_rc, cred_3gpp) >= 0))
1740 return interworking_connect_roaming_consortium(wpa_s, cred_rc,
1741 bss, only_add);
1742
1743 if (cred_3gpp &&
1744 (cred == NULL || cred_prio_cmp(cred_3gpp, cred) >= 0)) {
1745 return interworking_connect_3gpp(wpa_s, cred_3gpp, bss,
1746 only_add);
1747 }
1748
1749 if (cred == NULL) {
1750 wpa_msg(wpa_s, MSG_DEBUG,
1751 "Interworking: No matching credentials found for "
1752 MACSTR, MAC2STR(bss->bssid));
1753 return -1;
1754 }
1755
1756 realm = nai_realm_parse(bss->anqp ? bss->anqp->nai_realm : NULL,
1757 &count);
1758 if (realm == NULL) {
1759 wpa_msg(wpa_s, MSG_DEBUG,
1760 "Interworking: Could not parse NAI Realm list from "
1761 MACSTR, MAC2STR(bss->bssid));
1762 return -1;
1763 }
1764
1765 for (i = 0; i < count; i++) {
1766 if (!nai_realm_match(&realm[i], cred->realm))
1767 continue;
1768 eap = nai_realm_find_eap(wpa_s, cred, &realm[i]);
1769 if (eap)
1770 break;
1771 }
1772
1773 if (!eap) {
1774 wpa_msg(wpa_s, MSG_DEBUG,
1775 "Interworking: No matching credentials and EAP method found for "
1776 MACSTR, MAC2STR(bss->bssid));
1777 nai_realm_free(realm, count);
1778 return -1;
1779 }
1780
1781 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Connect with " MACSTR,
1782 MAC2STR(bss->bssid));
1783
1784 if (already_connected(wpa_s, cred, bss)) {
1785 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_ALREADY_CONNECTED MACSTR,
1786 MAC2STR(bss->bssid));
1787 nai_realm_free(realm, count);
1788 return 0;
1789 }
1790
1791 remove_duplicate_network(wpa_s, cred, bss);
1792
1793 ssid = wpa_config_add_network(wpa_s->conf);
1794 if (ssid == NULL) {
1795 nai_realm_free(realm, count);
1796 return -1;
1797 }
1798 ssid->parent_cred = cred;
1799 wpas_notify_network_added(wpa_s, ssid);
1800 wpa_config_set_network_defaults(ssid);
1801 ssid->priority = cred->priority;
1802 ssid->temporary = 1;
1803 ssid->ssid = os_zalloc(bss->ssid_len + 1);
1804 if (ssid->ssid == NULL)
1805 goto fail;
1806 os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
1807 ssid->ssid_len = bss->ssid_len;
1808
1809 if (interworking_set_hs20_params(wpa_s, ssid) < 0)
1810 goto fail;
1811
1812 if (wpa_config_set(ssid, "eap", eap_get_name(EAP_VENDOR_IETF,
1813 eap->method), 0) < 0)
1814 goto fail;
1815
1816 switch (eap->method) {
1817 case EAP_TYPE_TTLS:
1818 if (eap->inner_method) {
1819 name = eap_get_name(EAP_VENDOR_IETF, eap->inner_method);
1820 if (!name)
1821 goto fail;
1822 os_snprintf(buf, sizeof(buf), "\"autheap=%s\"", name);
1823 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1824 goto fail;
1825 break;
1826 }
1827 switch (eap->inner_non_eap) {
1828 case NAI_REALM_INNER_NON_EAP_PAP:
1829 if (wpa_config_set(ssid, "phase2", "\"auth=PAP\"", 0) <
1830 0)
1831 goto fail;
1832 break;
1833 case NAI_REALM_INNER_NON_EAP_CHAP:
1834 if (wpa_config_set(ssid, "phase2", "\"auth=CHAP\"", 0)
1835 < 0)
1836 goto fail;
1837 break;
1838 case NAI_REALM_INNER_NON_EAP_MSCHAP:
1839 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAP\"",
1840 0) < 0)
1841 goto fail;
1842 break;
1843 case NAI_REALM_INNER_NON_EAP_MSCHAPV2:
1844 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1845 0) < 0)
1846 goto fail;
1847 break;
1848 default:
1849 /* EAP params were not set - assume TTLS/MSCHAPv2 */
1850 if (wpa_config_set(ssid, "phase2", "\"auth=MSCHAPV2\"",
1851 0) < 0)
1852 goto fail;
1853 break;
1854 }
1855 break;
1856 case EAP_TYPE_PEAP:
1857 case EAP_TYPE_FAST:
1858 if (wpa_config_set(ssid, "phase1", "\"fast_provisioning=2\"",
1859 0) < 0)
1860 goto fail;
1861 if (wpa_config_set(ssid, "pac_file",
1862 "\"blob://pac_interworking\"", 0) < 0)
1863 goto fail;
1864 name = eap_get_name(EAP_VENDOR_IETF,
1865 eap->inner_method ? eap->inner_method :
1866 EAP_TYPE_MSCHAPV2);
1867 if (name == NULL)
1868 goto fail;
1869 os_snprintf(buf, sizeof(buf), "\"auth=%s\"", name);
1870 if (wpa_config_set(ssid, "phase2", buf, 0) < 0)
1871 goto fail;
1872 break;
1873 case EAP_TYPE_TLS:
1874 break;
1875 }
1876
1877 if (interworking_set_eap_params(ssid, cred,
1878 eap->method == EAP_TYPE_TTLS) < 0)
1879 goto fail;
1880
1881 nai_realm_free(realm, count);
1882
1883 wpa_s->next_ssid = ssid;
1884 wpa_config_update_prio_list(wpa_s->conf);
1885 if (!only_add)
1886 interworking_reconnect(wpa_s);
1887
1888 return ssid->id;
1889
1890 fail:
1891 wpas_notify_network_removed(wpa_s, ssid);
1892 wpa_config_remove_network(wpa_s->conf, ssid->id);
1893 nai_realm_free(realm, count);
1894 return -1;
1895 }
1896
1897
1898 #ifdef PCSC_FUNCS
1899 static int interworking_pcsc_read_imsi(struct wpa_supplicant *wpa_s)
1900 {
1901 size_t len;
1902
1903 if (wpa_s->imsi[0] && wpa_s->mnc_len)
1904 return 0;
1905
1906 len = sizeof(wpa_s->imsi) - 1;
1907 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) {
1908 scard_deinit(wpa_s->scard);
1909 wpa_s->scard = NULL;
1910 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI");
1911 return -1;
1912 }
1913 wpa_s->imsi[len] = '\0';
1914 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard);
1915 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)",
1916 wpa_s->imsi, wpa_s->mnc_len);
1917
1918 return 0;
1919 }
1920 #endif /* PCSC_FUNCS */
1921
1922
1923 static struct wpa_cred * interworking_credentials_available_3gpp(
1924 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
1925 int *excluded)
1926 {
1927 struct wpa_cred *selected = NULL;
1928 #ifdef INTERWORKING_3GPP
1929 struct wpa_cred *cred;
1930 int ret;
1931 int is_excluded = 0;
1932
1933 if (bss->anqp == NULL || bss->anqp->anqp_3gpp == NULL) {
1934 wpa_msg(wpa_s, MSG_DEBUG,
1935 "interworking-avail-3gpp: not avail, anqp: %p anqp_3gpp: %p",
1936 bss->anqp, bss->anqp ? bss->anqp->anqp_3gpp : NULL);
1937 return NULL;
1938 }
1939
1940 #ifdef CONFIG_EAP_PROXY
1941 if (!wpa_s->imsi[0]) {
1942 size_t len;
1943 wpa_msg(wpa_s, MSG_DEBUG,
1944 "Interworking: IMSI not available - try to read again through eap_proxy");
1945 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, -1,
1946 wpa_s->imsi,
1947 &len);
1948 if (wpa_s->mnc_len > 0) {
1949 wpa_s->imsi[len] = '\0';
1950 wpa_msg(wpa_s, MSG_DEBUG,
1951 "eap_proxy: IMSI %s (MNC length %d)",
1952 wpa_s->imsi, wpa_s->mnc_len);
1953 } else {
1954 wpa_msg(wpa_s, MSG_DEBUG,
1955 "eap_proxy: IMSI not available");
1956 }
1957 }
1958 #endif /* CONFIG_EAP_PROXY */
1959
1960 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
1961 char *sep;
1962 const char *imsi;
1963 int mnc_len;
1964 char imsi_buf[16];
1965 size_t msin_len;
1966
1967 #ifdef PCSC_FUNCS
1968 if (cred->pcsc && wpa_s->scard) {
1969 if (interworking_pcsc_read_imsi(wpa_s) < 0)
1970 continue;
1971 imsi = wpa_s->imsi;
1972 mnc_len = wpa_s->mnc_len;
1973 goto compare;
1974 }
1975 #endif /* PCSC_FUNCS */
1976 #ifdef CONFIG_EAP_PROXY
1977 if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
1978 imsi = wpa_s->imsi;
1979 mnc_len = wpa_s->mnc_len;
1980 goto compare;
1981 }
1982 #endif /* CONFIG_EAP_PROXY */
1983
1984 if (cred->imsi == NULL || !cred->imsi[0] ||
1985 (!wpa_s->conf->external_sim &&
1986 (cred->milenage == NULL || !cred->milenage[0])))
1987 continue;
1988
1989 sep = os_strchr(cred->imsi, '-');
1990 if (sep == NULL ||
1991 (sep - cred->imsi != 5 && sep - cred->imsi != 6))
1992 continue;
1993 mnc_len = sep - cred->imsi - 3;
1994 os_memcpy(imsi_buf, cred->imsi, 3 + mnc_len);
1995 sep++;
1996 msin_len = os_strlen(cred->imsi);
1997 if (3 + mnc_len + msin_len >= sizeof(imsi_buf) - 1)
1998 msin_len = sizeof(imsi_buf) - 3 - mnc_len - 1;
1999 os_memcpy(&imsi_buf[3 + mnc_len], sep, msin_len);
2000 imsi_buf[3 + mnc_len + msin_len] = '\0';
2001 imsi = imsi_buf;
2002
2003 #if defined(PCSC_FUNCS) || defined(CONFIG_EAP_PROXY)
2004 compare:
2005 #endif /* PCSC_FUNCS || CONFIG_EAP_PROXY */
2006 wpa_msg(wpa_s, MSG_DEBUG,
2007 "Interworking: Parsing 3GPP info from " MACSTR,
2008 MAC2STR(bss->bssid));
2009 ret = plmn_id_match(bss->anqp->anqp_3gpp, imsi, mnc_len);
2010 wpa_msg(wpa_s, MSG_DEBUG, "PLMN match %sfound",
2011 ret ? "" : "not ");
2012 if (ret) {
2013 if (cred_no_required_oi_match(cred, bss))
2014 continue;
2015 if (!ignore_bw &&
2016 cred_below_min_backhaul(wpa_s, cred, bss))
2017 continue;
2018 if (!ignore_bw &&
2019 cred_over_max_bss_load(wpa_s, cred, bss))
2020 continue;
2021 if (!ignore_bw &&
2022 cred_conn_capab_missing(wpa_s, cred, bss))
2023 continue;
2024 if (cred_excluded_ssid(cred, bss)) {
2025 if (excluded == NULL)
2026 continue;
2027 if (selected == NULL) {
2028 selected = cred;
2029 is_excluded = 1;
2030 }
2031 } else {
2032 if (selected == NULL || is_excluded ||
2033 cred_prio_cmp(selected, cred) < 0) {
2034 selected = cred;
2035 is_excluded = 0;
2036 }
2037 }
2038 }
2039 }
2040
2041 if (excluded)
2042 *excluded = is_excluded;
2043 #endif /* INTERWORKING_3GPP */
2044 return selected;
2045 }
2046
2047
2048 static struct wpa_cred * interworking_credentials_available_realm(
2049 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2050 int *excluded)
2051 {
2052 struct wpa_cred *cred, *selected = NULL;
2053 struct nai_realm *realm;
2054 u16 count, i;
2055 int is_excluded = 0;
2056
2057 if (bss->anqp == NULL || bss->anqp->nai_realm == NULL)
2058 return NULL;
2059
2060 if (wpa_s->conf->cred == NULL)
2061 return NULL;
2062
2063 wpa_msg(wpa_s, MSG_DEBUG, "Interworking: Parsing NAI Realm list from "
2064 MACSTR, MAC2STR(bss->bssid));
2065 realm = nai_realm_parse(bss->anqp->nai_realm, &count);
2066 if (realm == NULL) {
2067 wpa_msg(wpa_s, MSG_DEBUG,
2068 "Interworking: Could not parse NAI Realm list from "
2069 MACSTR, MAC2STR(bss->bssid));
2070 return NULL;
2071 }
2072
2073 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2074 if (cred->realm == NULL)
2075 continue;
2076
2077 for (i = 0; i < count; i++) {
2078 if (!nai_realm_match(&realm[i], cred->realm))
2079 continue;
2080 if (nai_realm_find_eap(wpa_s, cred, &realm[i])) {
2081 if (cred_no_required_oi_match(cred, bss))
2082 continue;
2083 if (!ignore_bw &&
2084 cred_below_min_backhaul(wpa_s, cred, bss))
2085 continue;
2086 if (!ignore_bw &&
2087 cred_over_max_bss_load(wpa_s, cred, bss))
2088 continue;
2089 if (!ignore_bw &&
2090 cred_conn_capab_missing(wpa_s, cred, bss))
2091 continue;
2092 if (cred_excluded_ssid(cred, bss)) {
2093 if (excluded == NULL)
2094 continue;
2095 if (selected == NULL) {
2096 selected = cred;
2097 is_excluded = 1;
2098 }
2099 } else {
2100 if (selected == NULL || is_excluded ||
2101 cred_prio_cmp(selected, cred) < 0)
2102 {
2103 selected = cred;
2104 is_excluded = 0;
2105 }
2106 }
2107 break;
2108 } else {
2109 wpa_msg(wpa_s, MSG_DEBUG,
2110 "Interworking: realm-find-eap returned false");
2111 }
2112 }
2113 }
2114
2115 nai_realm_free(realm, count);
2116
2117 if (excluded)
2118 *excluded = is_excluded;
2119
2120 return selected;
2121 }
2122
2123
2124 static struct wpa_cred * interworking_credentials_available_helper(
2125 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int ignore_bw,
2126 int *excluded)
2127 {
2128 struct wpa_cred *cred, *cred2;
2129 int excluded1, excluded2 = 0;
2130
2131 if (disallowed_bssid(wpa_s, bss->bssid) ||
2132 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
2133 wpa_printf(MSG_DEBUG, "Interworking: Ignore disallowed BSS "
2134 MACSTR, MAC2STR(bss->bssid));
2135 return NULL;
2136 }
2137
2138 cred = interworking_credentials_available_realm(wpa_s, bss, ignore_bw,
2139 &excluded1);
2140 cred2 = interworking_credentials_available_3gpp(wpa_s, bss, ignore_bw,
2141 &excluded2);
2142 if (cred && cred2 &&
2143 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2144 cred = cred2;
2145 excluded1 = excluded2;
2146 }
2147 if (!cred) {
2148 cred = cred2;
2149 excluded1 = excluded2;
2150 }
2151
2152 cred2 = interworking_credentials_available_roaming_consortium(
2153 wpa_s, bss, ignore_bw, &excluded2);
2154 if (cred && cred2 &&
2155 (cred_prio_cmp(cred2, cred) >= 0 || (!excluded2 && excluded1))) {
2156 cred = cred2;
2157 excluded1 = excluded2;
2158 }
2159 if (!cred) {
2160 cred = cred2;
2161 excluded1 = excluded2;
2162 }
2163
2164 if (excluded)
2165 *excluded = excluded1;
2166 return cred;
2167 }
2168
2169
2170 static struct wpa_cred * interworking_credentials_available(
2171 struct wpa_supplicant *wpa_s, struct wpa_bss *bss, int *excluded)
2172 {
2173 struct wpa_cred *cred;
2174
2175 if (excluded)
2176 *excluded = 0;
2177 cred = interworking_credentials_available_helper(wpa_s, bss, 0,
2178 excluded);
2179 if (cred)
2180 return cred;
2181 return interworking_credentials_available_helper(wpa_s, bss, 1,
2182 excluded);
2183 }
2184
2185
2186 int domain_name_list_contains(struct wpabuf *domain_names,
2187 const char *domain, int exact_match)
2188 {
2189 const u8 *pos, *end;
2190 size_t len;
2191
2192 len = os_strlen(domain);
2193 pos = wpabuf_head(domain_names);
2194 end = pos + wpabuf_len(domain_names);
2195
2196 while (end - pos > 1) {
2197 u8 elen;
2198
2199 elen = *pos++;
2200 if (elen > end - pos)
2201 break;
2202
2203 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: AP domain name",
2204 pos, elen);
2205 if (elen == len &&
2206 os_strncasecmp(domain, (const char *) pos, len) == 0)
2207 return 1;
2208 if (!exact_match && elen > len && pos[elen - len - 1] == '.') {
2209 const char *ap = (const char *) pos;
2210 int offset = elen - len;
2211
2212 if (os_strncasecmp(domain, ap + offset, len) == 0)
2213 return 1;
2214 }
2215
2216 pos += elen;
2217 }
2218
2219 return 0;
2220 }
2221
2222
2223 int interworking_home_sp_cred(struct wpa_supplicant *wpa_s,
2224 struct wpa_cred *cred,
2225 struct wpabuf *domain_names)
2226 {
2227 size_t i;
2228 int ret = -1;
2229 #ifdef INTERWORKING_3GPP
2230 char nai[100], *realm;
2231
2232 char *imsi = NULL;
2233 int mnc_len = 0;
2234 if (cred->imsi)
2235 imsi = cred->imsi;
2236 #ifdef PCSC_FUNCS
2237 else if (cred->pcsc && wpa_s->scard) {
2238 if (interworking_pcsc_read_imsi(wpa_s) < 0)
2239 return -1;
2240 imsi = wpa_s->imsi;
2241 mnc_len = wpa_s->mnc_len;
2242 }
2243 #endif /* PCSC_FUNCS */
2244 #ifdef CONFIG_EAP_PROXY
2245 else if (cred->pcsc && wpa_s->mnc_len > 0 && wpa_s->imsi[0]) {
2246 imsi = wpa_s->imsi;
2247 mnc_len = wpa_s->mnc_len;
2248 }
2249 #endif /* CONFIG_EAP_PROXY */
2250 if (domain_names &&
2251 imsi && build_root_nai(nai, sizeof(nai), imsi, mnc_len, 0) == 0) {
2252 realm = os_strchr(nai, '@');
2253 if (realm)
2254 realm++;
2255 wpa_msg(wpa_s, MSG_DEBUG,
2256 "Interworking: Search for match with SIM/USIM domain %s",
2257 realm);
2258 if (realm &&
2259 domain_name_list_contains(domain_names, realm, 1))
2260 return 1;
2261 if (realm)
2262 ret = 0;
2263 }
2264 #endif /* INTERWORKING_3GPP */
2265
2266 if (domain_names == NULL || cred->domain == NULL)
2267 return ret;
2268
2269 for (i = 0; i < cred->num_domain; i++) {
2270 wpa_msg(wpa_s, MSG_DEBUG,
2271 "Interworking: Search for match with home SP FQDN %s",
2272 cred->domain[i]);
2273 if (domain_name_list_contains(domain_names, cred->domain[i], 1))
2274 return 1;
2275 }
2276
2277 return 0;
2278 }
2279
2280
2281 static int interworking_home_sp(struct wpa_supplicant *wpa_s,
2282 struct wpabuf *domain_names)
2283 {
2284 struct wpa_cred *cred;
2285
2286 if (domain_names == NULL || wpa_s->conf->cred == NULL)
2287 return -1;
2288
2289 for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
2290 int res = interworking_home_sp_cred(wpa_s, cred, domain_names);
2291 if (res)
2292 return res;
2293 }
2294
2295 return 0;
2296 }
2297
2298
2299 static int interworking_find_network_match(struct wpa_supplicant *wpa_s)
2300 {
2301 struct wpa_bss *bss;
2302 struct wpa_ssid *ssid;
2303
2304 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2305 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
2306 if (wpas_network_disabled(wpa_s, ssid) ||
2307 ssid->mode != WPAS_MODE_INFRA)
2308 continue;
2309 if (ssid->ssid_len != bss->ssid_len ||
2310 os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) !=
2311 0)
2312 continue;
2313 /*
2314 * TODO: Consider more accurate matching of security
2315 * configuration similarly to what is done in events.c
2316 */
2317 return 1;
2318 }
2319 }
2320
2321 return 0;
2322 }
2323
2324
2325 static int roaming_partner_match(struct wpa_supplicant *wpa_s,
2326 struct roaming_partner *partner,
2327 struct wpabuf *domain_names)
2328 {
2329 wpa_printf(MSG_DEBUG, "Interworking: Comparing roaming_partner info fqdn='%s' exact_match=%d priority=%u country='%s'",
2330 partner->fqdn, partner->exact_match, partner->priority,
2331 partner->country);
2332 wpa_hexdump_ascii(MSG_DEBUG, "Interworking: Domain names",
2333 wpabuf_head(domain_names),
2334 wpabuf_len(domain_names));
2335 if (!domain_name_list_contains(domain_names, partner->fqdn,
2336 partner->exact_match))
2337 return 0;
2338 /* TODO: match Country */
2339 return 1;
2340 }
2341
2342
2343 static u8 roaming_prio(struct wpa_supplicant *wpa_s, struct wpa_cred *cred,
2344 struct wpa_bss *bss)
2345 {
2346 size_t i;
2347
2348 if (bss->anqp == NULL || bss->anqp->domain_name == NULL) {
2349 wpa_printf(MSG_DEBUG, "Interworking: No ANQP domain name info -> use default roaming partner priority 128");
2350 return 128; /* cannot check preference with domain name */
2351 }
2352
2353 if (interworking_home_sp_cred(wpa_s, cred, bss->anqp->domain_name) > 0)
2354 {
2355 wpa_printf(MSG_DEBUG, "Interworking: Determined to be home SP -> use maximum preference 0 as roaming partner priority");
2356 return 0; /* max preference for home SP network */
2357 }
2358
2359 for (i = 0; i < cred->num_roaming_partner; i++) {
2360 if (roaming_partner_match(wpa_s, &cred->roaming_partner[i],
2361 bss->anqp->domain_name)) {
2362 wpa_printf(MSG_DEBUG, "Interworking: Roaming partner preference match - priority %u",
2363 cred->roaming_partner[i].priority);
2364 return cred->roaming_partner[i].priority;
2365 }
2366 }
2367
2368 wpa_printf(MSG_DEBUG, "Interworking: No roaming partner preference match - use default roaming partner priority 128");
2369 return 128;
2370 }
2371
2372
2373 static struct wpa_bss * pick_best_roaming_partner(struct wpa_supplicant *wpa_s,
2374 struct wpa_bss *selected,
2375 struct wpa_cred *cred)
2376 {
2377 struct wpa_bss *bss;
2378 u8 best_prio, prio;
2379 struct wpa_cred *cred2;
2380
2381 /*
2382 * Check if any other BSS is operated by a more preferred roaming
2383 * partner.
2384 */
2385
2386 best_prio = roaming_prio(wpa_s, cred, selected);
2387 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for selected BSS "
2388 MACSTR " (cred=%d)", best_prio, MAC2STR(selected->bssid),
2389 cred->id);
2390
2391 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2392 if (bss == selected)
2393 continue;
2394 cred2 = interworking_credentials_available(wpa_s, bss, NULL);
2395 if (!cred2)
2396 continue;
2397 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN))
2398 continue;
2399 prio = roaming_prio(wpa_s, cred2, bss);
2400 wpa_printf(MSG_DEBUG, "Interworking: roaming_prio=%u for BSS "
2401 MACSTR " (cred=%d)", prio, MAC2STR(bss->bssid),
2402 cred2->id);
2403 if (prio < best_prio) {
2404 int bh1, bh2, load1, load2, conn1, conn2;
2405 bh1 = cred_below_min_backhaul(wpa_s, cred, selected);
2406 load1 = cred_over_max_bss_load(wpa_s, cred, selected);
2407 conn1 = cred_conn_capab_missing(wpa_s, cred, selected);
2408 bh2 = cred_below_min_backhaul(wpa_s, cred2, bss);
2409 load2 = cred_over_max_bss_load(wpa_s, cred2, bss);
2410 conn2 = cred_conn_capab_missing(wpa_s, cred2, bss);
2411 wpa_printf(MSG_DEBUG, "Interworking: old: %d %d %d new: %d %d %d",
2412 bh1, load1, conn1, bh2, load2, conn2);
2413 if (bh1 || load1 || conn1 || !(bh2 || load2 || conn2)) {
2414 wpa_printf(MSG_DEBUG, "Interworking: Better roaming partner " MACSTR " selected", MAC2STR(bss->bssid));
2415 best_prio = prio;
2416 selected = bss;
2417 }
2418 }
2419 }
2420
2421 return selected;
2422 }
2423
2424
2425 static void interworking_select_network(struct wpa_supplicant *wpa_s)
2426 {
2427 struct wpa_bss *bss, *selected = NULL, *selected_home = NULL;
2428 struct wpa_bss *selected2 = NULL, *selected2_home = NULL;
2429 unsigned int count = 0;
2430 const char *type;
2431 int res;
2432 struct wpa_cred *cred, *selected_cred = NULL;
2433 struct wpa_cred *selected_home_cred = NULL;
2434 struct wpa_cred *selected2_cred = NULL;
2435 struct wpa_cred *selected2_home_cred = NULL;
2436
2437 wpa_s->network_select = 0;
2438
2439 wpa_printf(MSG_DEBUG, "Interworking: Select network (auto_select=%d)",
2440 wpa_s->auto_select);
2441 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2442 int excluded = 0;
2443 int bh, bss_load, conn_capab;
2444 cred = interworking_credentials_available(wpa_s, bss,
2445 &excluded);
2446 if (!cred)
2447 continue;
2448
2449 if (!wpa_bss_get_ie(bss, WLAN_EID_RSN)) {
2450 /*
2451 * We currently support only HS 2.0 networks and those
2452 * are required to use WPA2-Enterprise.
2453 */
2454 wpa_msg(wpa_s, MSG_DEBUG,
2455 "Interworking: Credential match with " MACSTR
2456 " but network does not use RSN",
2457 MAC2STR(bss->bssid));
2458 continue;
2459 }
2460 if (!excluded)
2461 count++;
2462 res = interworking_home_sp(wpa_s, bss->anqp ?
2463 bss->anqp->domain_name : NULL);
2464 if (res > 0)
2465 type = "home";
2466 else if (res == 0)
2467 type = "roaming";
2468 else
2469 type = "unknown";
2470 bh = cred_below_min_backhaul(wpa_s, cred, bss);
2471 bss_load = cred_over_max_bss_load(wpa_s, cred, bss);
2472 conn_capab = cred_conn_capab_missing(wpa_s, cred, bss);
2473 wpa_msg(wpa_s, MSG_INFO, "%s" MACSTR " type=%s%s%s%s id=%d priority=%d sp_priority=%d",
2474 excluded ? INTERWORKING_BLACKLISTED : INTERWORKING_AP,
2475 MAC2STR(bss->bssid), type,
2476 bh ? " below_min_backhaul=1" : "",
2477 bss_load ? " over_max_bss_load=1" : "",
2478 conn_capab ? " conn_capab_missing=1" : "",
2479 cred->id, cred->priority, cred->sp_priority);
2480 if (excluded)
2481 continue;
2482 if (wpa_s->auto_select ||
2483 (wpa_s->conf->auto_interworking &&
2484 wpa_s->auto_network_select)) {
2485 if (bh || bss_load || conn_capab) {
2486 if (selected2_cred == NULL ||
2487 cred_prio_cmp(cred, selected2_cred) > 0) {
2488 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2");
2489 selected2 = bss;
2490 selected2_cred = cred;
2491 }
2492 if (res > 0 &&
2493 (selected2_home_cred == NULL ||
2494 cred_prio_cmp(cred, selected2_home_cred) >
2495 0)) {
2496 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected2_home");
2497 selected2_home = bss;
2498 selected2_home_cred = cred;
2499 }
2500 } else {
2501 if (selected_cred == NULL ||
2502 cred_prio_cmp(cred, selected_cred) > 0) {
2503 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected");
2504 selected = bss;
2505 selected_cred = cred;
2506 }
2507 if (res > 0 &&
2508 (selected_home_cred == NULL ||
2509 cred_prio_cmp(cred, selected_home_cred) >
2510 0)) {
2511 wpa_printf(MSG_DEBUG, "Interworking: Mark as selected_home");
2512 selected_home = bss;
2513 selected_home_cred = cred;
2514 }
2515 }
2516 }
2517 }
2518
2519 if (selected_home && selected_home != selected &&
2520 selected_home_cred &&
2521 (selected_cred == NULL ||
2522 cred_prio_cmp(selected_home_cred, selected_cred) >= 0)) {
2523 /* Prefer network operated by the Home SP */
2524 wpa_printf(MSG_DEBUG, "Interworking: Overrided selected with selected_home");
2525 selected = selected_home;
2526 selected_cred = selected_home_cred;
2527 }
2528
2529 if (!selected) {
2530 if (selected2_home) {
2531 wpa_printf(MSG_DEBUG, "Interworking: Use home BSS with BW limit mismatch since no other network could be selected");
2532 selected = selected2_home;
2533 selected_cred = selected2_home_cred;
2534 } else if (selected2) {
2535 wpa_printf(MSG_DEBUG, "Interworking: Use visited BSS with BW limit mismatch since no other network could be selected");
2536 selected = selected2;
2537 selected_cred = selected2_cred;
2538 }
2539 }
2540
2541 if (count == 0) {
2542 /*
2543 * No matching network was found based on configured
2544 * credentials. Check whether any of the enabled network blocks
2545 * have matching APs.
2546 */
2547 if (interworking_find_network_match(wpa_s)) {
2548 wpa_msg(wpa_s, MSG_DEBUG,
2549 "Interworking: Possible BSS match for enabled network configurations");
2550 if (wpa_s->auto_select) {
2551 interworking_reconnect(wpa_s);
2552 return;
2553 }
2554 }
2555
2556 if (wpa_s->auto_network_select) {
2557 wpa_msg(wpa_s, MSG_DEBUG,
2558 "Interworking: Continue scanning after ANQP fetch");
2559 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval,
2560 0);
2561 return;
2562 }
2563
2564 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_NO_MATCH "No network "
2565 "with matching credentials found");
2566 if (wpa_s->wpa_state == WPA_SCANNING)
2567 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2568 }
2569
2570 if (selected) {
2571 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR,
2572 MAC2STR(selected->bssid));
2573 selected = pick_best_roaming_partner(wpa_s, selected,
2574 selected_cred);
2575 wpa_printf(MSG_DEBUG, "Interworking: Selected " MACSTR
2576 " (after best roaming partner selection)",
2577 MAC2STR(selected->bssid));
2578 wpa_msg(wpa_s, MSG_INFO, INTERWORKING_SELECTED MACSTR,
2579 MAC2STR(selected->bssid));
2580 interworking_connect(wpa_s, selected, 0);
2581 } else if (wpa_s->wpa_state == WPA_SCANNING)
2582 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2583 }
2584
2585
2586 static struct wpa_bss_anqp *
2587 interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
2588 {
2589 struct wpa_bss *other;
2590
2591 if (is_zero_ether_addr(bss->hessid))
2592 return NULL; /* Cannot be in the same homegenous ESS */
2593
2594 dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
2595 if (other == bss)
2596 continue;
2597 if (other->anqp == NULL)
2598 continue;
2599 if (other->anqp->roaming_consortium == NULL &&
2600 other->anqp->nai_realm == NULL &&
2601 other->anqp->anqp_3gpp == NULL &&
2602 other->anqp->domain_name == NULL)
2603 continue;
2604 if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
2605 continue;
2606 if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
2607 continue;
2608 if (bss->ssid_len != other->ssid_len ||
2609 os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
2610 continue;
2611
2612 wpa_msg(wpa_s, MSG_DEBUG,
2613 "Interworking: Share ANQP data with already fetched BSSID "
2614 MACSTR " and " MACSTR,
2615 MAC2STR(other->bssid), MAC2STR(bss->bssid));
2616 other->anqp->users++;
2617 return other->anqp;
2618 }
2619
2620 return NULL;
2621 }
2622
2623
2624 static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
2625 {
2626 struct wpa_bss *bss;
2627 int found = 0;
2628 const u8 *ie;
2629
2630 wpa_printf(MSG_DEBUG, "Interworking: next_anqp_fetch - "
2631 "fetch_anqp_in_progress=%d fetch_osu_icon_in_progress=%d",
2632 wpa_s->fetch_anqp_in_progress,
2633 wpa_s->fetch_osu_icon_in_progress);
2634
2635 if (eloop_terminated() || !wpa_s->fetch_anqp_in_progress) {
2636 wpa_printf(MSG_DEBUG, "Interworking: Stop next-ANQP-fetch");
2637 return;
2638 }
2639
2640 #ifdef CONFIG_HS20
2641 if (wpa_s->fetch_osu_icon_in_progress) {
2642 wpa_printf(MSG_DEBUG, "Interworking: Next icon (in progress)");
2643 hs20_next_osu_icon(wpa_s);
2644 return;
2645 }
2646 #endif /* CONFIG_HS20 */
2647
2648 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2649 if (!(bss->caps & IEEE80211_CAP_ESS))
2650 continue;
2651 ie = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB);
2652 if (ie == NULL || ie[1] < 4 || !(ie[5] & 0x80))
2653 continue; /* AP does not support Interworking */
2654 if (disallowed_bssid(wpa_s, bss->bssid) ||
2655 disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len))
2656 continue; /* Disallowed BSS */
2657
2658 if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
2659 if (bss->anqp == NULL) {
2660 bss->anqp = interworking_match_anqp_info(wpa_s,
2661 bss);
2662 if (bss->anqp) {
2663 /* Shared data already fetched */
2664 continue;
2665 }
2666 bss->anqp = wpa_bss_anqp_alloc();
2667 if (bss->anqp == NULL)
2668 break;
2669 }
2670 found++;
2671 bss->flags |= WPA_BSS_ANQP_FETCH_TRIED;
2672 wpa_msg(wpa_s, MSG_INFO, "Starting ANQP fetch for "
2673 MACSTR, MAC2STR(bss->bssid));
2674 interworking_anqp_send_req(wpa_s, bss);
2675 break;
2676 }
2677 }
2678
2679 if (found == 0) {
2680 #ifdef CONFIG_HS20
2681 if (wpa_s->fetch_osu_info) {
2682 if (wpa_s->num_prov_found == 0 &&
2683 wpa_s->fetch_osu_waiting_scan &&
2684 wpa_s->num_osu_scans < 3) {
2685 wpa_printf(MSG_DEBUG, "HS 2.0: No OSU providers seen - try to scan again");
2686 hs20_start_osu_scan(wpa_s);
2687 return;
2688 }
2689 wpa_printf(MSG_DEBUG, "Interworking: Next icon");
2690 hs20_osu_icon_fetch(wpa_s);
2691 return;
2692 }
2693 #endif /* CONFIG_HS20 */
2694 wpa_msg(wpa_s, MSG_INFO, "ANQP fetch completed");
2695 wpa_s->fetch_anqp_in_progress = 0;
2696 if (wpa_s->network_select)
2697 interworking_select_network(wpa_s);
2698 }
2699 }
2700
2701
2702 void interworking_start_fetch_anqp(struct wpa_supplicant *wpa_s)
2703 {
2704 struct wpa_bss *bss;
2705
2706 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list)
2707 bss->flags &= ~WPA_BSS_ANQP_FETCH_TRIED;
2708
2709 wpa_s->fetch_anqp_in_progress = 1;
2710
2711 /*
2712 * Start actual ANQP operation from eloop call to make sure the loop
2713 * does not end up using excessive recursion.
2714 */
2715 eloop_register_timeout(0, 0, interworking_continue_anqp, wpa_s, NULL);
2716 }
2717
2718
2719 int interworking_fetch_anqp(struct wpa_supplicant *wpa_s)
2720 {
2721 if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select)
2722 return 0;
2723
2724 wpa_s->network_select = 0;
2725 wpa_s->fetch_all_anqp = 1;
2726 wpa_s->fetch_osu_info = 0;
2727
2728 interworking_start_fetch_anqp(wpa_s);
2729
2730 return 0;
2731 }
2732
2733
2734 void interworking_stop_fetch_anqp(struct wpa_supplicant *wpa_s)
2735 {
2736 if (!wpa_s->fetch_anqp_in_progress)
2737 return;
2738
2739 wpa_s->fetch_anqp_in_progress = 0;
2740 }
2741
2742
2743 int anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst,
2744 u16 info_ids[], size_t num_ids, u32 subtypes,
2745 u32 mbo_subtypes)
2746 {
2747 struct wpabuf *buf;
2748 struct wpabuf *extra_buf = NULL;
2749 int ret = 0;
2750 int freq;
2751 struct wpa_bss *bss;
2752 int res;
2753
2754 bss = wpa_bss_get_bssid(wpa_s, dst);
2755 if (!bss) {
2756 wpa_printf(MSG_WARNING,
2757 "ANQP: Cannot send query to unknown BSS "
2758 MACSTR, MAC2STR(dst));
2759 return -1;
2760 }
2761
2762 wpa_bss_anqp_unshare_alloc(bss);
2763 freq = bss->freq;
2764
2765 wpa_msg(wpa_s, MSG_DEBUG,
2766 "ANQP: Query Request to " MACSTR " for %u id(s)",
2767 MAC2STR(dst), (unsigned int) num_ids);
2768
2769 #ifdef CONFIG_HS20
2770 if (subtypes != 0) {
2771 extra_buf = wpabuf_alloc(100);
2772 if (extra_buf == NULL)
2773 return -1;
2774 hs20_put_anqp_req(subtypes, NULL, 0, extra_buf);
2775 }
2776 #endif /* CONFIG_HS20 */
2777
2778 #ifdef CONFIG_MBO
2779 if (mbo_subtypes) {
2780 struct wpabuf *mbo;
2781
2782 mbo = mbo_build_anqp_buf(wpa_s, bss, mbo_subtypes);
2783 if (mbo) {
2784 if (wpabuf_resize(&extra_buf, wpabuf_len(mbo))) {
2785 wpabuf_free(extra_buf);
2786 wpabuf_free(mbo);
2787 return -1;
2788 }
2789 wpabuf_put_buf(extra_buf, mbo);
2790 wpabuf_free(mbo);
2791 }
2792 }
2793 #endif /* CONFIG_MBO */
2794
2795 buf = anqp_build_req(info_ids, num_ids, extra_buf);
2796 wpabuf_free(extra_buf);
2797 if (buf == NULL)
2798 return -1;
2799
2800 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, anqp_resp_cb, wpa_s);
2801 if (res < 0) {
2802 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Failed to send Query Request");
2803 wpabuf_free(buf);
2804 ret = -1;
2805 } else {
2806 wpa_msg(wpa_s, MSG_DEBUG,
2807 "ANQP: Query started with dialog token %u", res);
2808 }
2809
2810 return ret;
2811 }
2812
2813
2814 static void anqp_add_extra(struct wpa_supplicant *wpa_s,
2815 struct wpa_bss_anqp *anqp, u16 info_id,
2816 const u8 *data, size_t slen)
2817 {
2818 struct wpa_bss_anqp_elem *tmp, *elem = NULL;
2819
2820 if (!anqp)
2821 return;
2822
2823 dl_list_for_each(tmp, &anqp->anqp_elems, struct wpa_bss_anqp_elem,
2824 list) {
2825 if (tmp->infoid == info_id) {
2826 elem = tmp;
2827 break;
2828 }
2829 }
2830
2831 if (!elem) {
2832 elem = os_zalloc(sizeof(*elem));
2833 if (!elem)
2834 return;
2835 elem->infoid = info_id;
2836 dl_list_add(&anqp->anqp_elems, &elem->list);
2837 } else {
2838 wpabuf_free(elem->payload);
2839 }
2840
2841 elem->payload = wpabuf_alloc_copy(data, slen);
2842 if (!elem->payload) {
2843 dl_list_del(&elem->list);
2844 os_free(elem);
2845 }
2846 }
2847
2848
2849 static void interworking_parse_venue_url(struct wpa_supplicant *wpa_s,
2850 const u8 *data, size_t len)
2851 {
2852 const u8 *pos = data, *end = data + len;
2853 char url[255];
2854
2855 while (end - pos >= 2) {
2856 u8 slen, num;
2857
2858 slen = *pos++;
2859 if (slen < 1 || slen > end - pos) {
2860 wpa_printf(MSG_DEBUG,
2861 "ANQP: Truncated Venue URL Duple field");
2862 return;
2863 }
2864
2865 num = *pos++;
2866 os_memcpy(url, pos, slen - 1);
2867 url[slen - 1] = '\0';
2868 wpa_msg(wpa_s, MSG_INFO, RX_VENUE_URL "%u %s", num, url);
2869 pos += slen - 1;
2870 }
2871 }
2872
2873
2874 static void interworking_parse_rx_anqp_resp(struct wpa_supplicant *wpa_s,
2875 struct wpa_bss *bss, const u8 *sa,
2876 u16 info_id,
2877 const u8 *data, size_t slen,
2878 u8 dialog_token)
2879 {
2880 const u8 *pos = data;
2881 struct wpa_bss_anqp *anqp = NULL;
2882 u8 type;
2883
2884 if (bss)
2885 anqp = bss->anqp;
2886
2887 switch (info_id) {
2888 case ANQP_CAPABILITY_LIST:
2889 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2890 " ANQP Capability list", MAC2STR(sa));
2891 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Capability list",
2892 pos, slen);
2893 if (anqp) {
2894 wpabuf_free(anqp->capability_list);
2895 anqp->capability_list = wpabuf_alloc_copy(pos, slen);
2896 }
2897 break;
2898 case ANQP_VENUE_NAME:
2899 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2900 " Venue Name", MAC2STR(sa));
2901 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Venue Name", pos, slen);
2902 if (anqp) {
2903 wpabuf_free(anqp->venue_name);
2904 anqp->venue_name = wpabuf_alloc_copy(pos, slen);
2905 }
2906 break;
2907 case ANQP_NETWORK_AUTH_TYPE:
2908 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2909 " Network Authentication Type information",
2910 MAC2STR(sa));
2911 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Network Authentication "
2912 "Type", pos, slen);
2913 if (anqp) {
2914 wpabuf_free(anqp->network_auth_type);
2915 anqp->network_auth_type = wpabuf_alloc_copy(pos, slen);
2916 }
2917 break;
2918 case ANQP_ROAMING_CONSORTIUM:
2919 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2920 " Roaming Consortium list", MAC2STR(sa));
2921 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: Roaming Consortium",
2922 pos, slen);
2923 if (anqp) {
2924 wpabuf_free(anqp->roaming_consortium);
2925 anqp->roaming_consortium = wpabuf_alloc_copy(pos, slen);
2926 }
2927 break;
2928 case ANQP_IP_ADDR_TYPE_AVAILABILITY:
2929 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2930 " IP Address Type Availability information",
2931 MAC2STR(sa));
2932 wpa_hexdump(MSG_MSGDUMP, "ANQP: IP Address Availability",
2933 pos, slen);
2934 if (anqp) {
2935 wpabuf_free(anqp->ip_addr_type_availability);
2936 anqp->ip_addr_type_availability =
2937 wpabuf_alloc_copy(pos, slen);
2938 }
2939 break;
2940 case ANQP_NAI_REALM:
2941 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2942 " NAI Realm list", MAC2STR(sa));
2943 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: NAI Realm", pos, slen);
2944 if (anqp) {
2945 wpabuf_free(anqp->nai_realm);
2946 anqp->nai_realm = wpabuf_alloc_copy(pos, slen);
2947 }
2948 break;
2949 case ANQP_3GPP_CELLULAR_NETWORK:
2950 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2951 " 3GPP Cellular Network information", MAC2STR(sa));
2952 wpa_hexdump_ascii(MSG_DEBUG, "ANQP: 3GPP Cellular Network",
2953 pos, slen);
2954 if (anqp) {
2955 wpabuf_free(anqp->anqp_3gpp);
2956 anqp->anqp_3gpp = wpabuf_alloc_copy(pos, slen);
2957 }
2958 break;
2959 case ANQP_DOMAIN_NAME:
2960 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2961 " Domain Name list", MAC2STR(sa));
2962 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: Domain Name", pos, slen);
2963 if (anqp) {
2964 wpabuf_free(anqp->domain_name);
2965 anqp->domain_name = wpabuf_alloc_copy(pos, slen);
2966 }
2967 break;
2968 #ifdef CONFIG_FILS
2969 case ANQP_FILS_REALM_INFO:
2970 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR
2971 " FILS Realm Information", MAC2STR(sa));
2972 wpa_hexdump_ascii(MSG_MSGDUMP, "ANQP: FILS Realm Information",
2973 pos, slen);
2974 if (anqp) {
2975 wpabuf_free(anqp->fils_realm_info);
2976 anqp->fils_realm_info = wpabuf_alloc_copy(pos, slen);
2977 }
2978 break;
2979 #endif /* CONFIG_FILS */
2980 case ANQP_VENUE_URL:
2981 wpa_msg(wpa_s, MSG_INFO, RX_ANQP MACSTR " Venue URL",
2982 MAC2STR(sa));
2983 anqp_add_extra(wpa_s, anqp, info_id, pos, slen);
2984
2985 if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
2986 wpa_printf(MSG_DEBUG,
2987 "ANQP: Ignore Venue URL since PMF was not enabled");
2988 break;
2989 }
2990 interworking_parse_venue_url(wpa_s, pos, slen);
2991 break;
2992 case ANQP_VENDOR_SPECIFIC:
2993 if (slen < 3)
2994 return;
2995
2996 switch (WPA_GET_BE24(pos)) {
2997 case OUI_WFA:
2998 pos += 3;
2999 slen -= 3;
3000
3001 if (slen < 1)
3002 return;
3003 type = *pos++;
3004 slen--;
3005
3006 switch (type) {
3007 #ifdef CONFIG_HS20
3008 case HS20_ANQP_OUI_TYPE:
3009 hs20_parse_rx_hs20_anqp_resp(wpa_s, bss, sa,
3010 pos, slen,
3011 dialog_token);
3012 break;
3013 #endif /* CONFIG_HS20 */
3014 #ifdef CONFIG_MBO
3015 case MBO_ANQP_OUI_TYPE:
3016 mbo_parse_rx_anqp_resp(wpa_s, bss, sa,
3017 pos, slen);
3018 break;
3019 #endif /* CONFIG_MBO */
3020 default:
3021 wpa_msg(wpa_s, MSG_DEBUG,
3022 "ANQP: Unsupported ANQP vendor type %u",
3023 type);
3024 break;
3025 }
3026 break;
3027 default:
3028 wpa_msg(wpa_s, MSG_DEBUG,
3029 "Interworking: Unsupported vendor-specific ANQP OUI %06x",
3030 WPA_GET_BE24(pos));
3031 return;
3032 }
3033 break;
3034 default:
3035 wpa_msg(wpa_s, MSG_DEBUG,
3036 "Interworking: Unsupported ANQP Info ID %u", info_id);
3037 anqp_add_extra(wpa_s, anqp, info_id, data, slen);
3038 break;
3039 }
3040 }
3041
3042
3043 void anqp_resp_cb(void *ctx, const u8 *dst, u8 dialog_token,
3044 enum gas_query_result result,
3045 const struct wpabuf *adv_proto,
3046 const struct wpabuf *resp, u16 status_code)
3047 {
3048 struct wpa_supplicant *wpa_s = ctx;
3049 const u8 *pos;
3050 const u8 *end;
3051 u16 info_id;
3052 u16 slen;
3053 struct wpa_bss *bss = NULL, *tmp;
3054 const char *anqp_result = "SUCCESS";
3055
3056 wpa_printf(MSG_DEBUG, "Interworking: anqp_resp_cb dst=" MACSTR
3057 " dialog_token=%u result=%d status_code=%u",
3058 MAC2STR(dst), dialog_token, result, status_code);
3059 if (result != GAS_QUERY_SUCCESS) {
3060 #ifdef CONFIG_HS20
3061 if (wpa_s->fetch_osu_icon_in_progress)
3062 hs20_icon_fetch_failed(wpa_s);
3063 #endif /* CONFIG_HS20 */
3064 anqp_result = "FAILURE";
3065 goto out;
3066 }
3067
3068 pos = wpabuf_head(adv_proto);
3069 if (wpabuf_len(adv_proto) < 4 || pos[0] != WLAN_EID_ADV_PROTO ||
3070 pos[1] < 2 || pos[3] != ACCESS_NETWORK_QUERY_PROTOCOL) {
3071 wpa_msg(wpa_s, MSG_DEBUG,
3072 "ANQP: Unexpected Advertisement Protocol in response");
3073 #ifdef CONFIG_HS20
3074 if (wpa_s->fetch_osu_icon_in_progress)
3075 hs20_icon_fetch_failed(wpa_s);
3076 #endif /* CONFIG_HS20 */
3077 anqp_result = "INVALID_FRAME";
3078 goto out;
3079 }
3080
3081 /*
3082 * If possible, select the BSS entry based on which BSS entry was used
3083 * for the request. This can help in cases where multiple BSS entries
3084 * may exist for the same AP.
3085 */
3086 dl_list_for_each_reverse(tmp, &wpa_s->bss, struct wpa_bss, list) {
3087 if (tmp == wpa_s->interworking_gas_bss &&
3088 os_memcmp(tmp->bssid, dst, ETH_ALEN) == 0) {
3089 bss = tmp;
3090 break;
3091 }
3092 }
3093 if (bss == NULL)
3094 bss = wpa_bss_get_bssid(wpa_s, dst);
3095
3096 pos = wpabuf_head(resp);
3097 end = pos + wpabuf_len(resp);
3098
3099 while (pos < end) {
3100 unsigned int left = end - pos;
3101
3102 if (left < 4) {
3103 wpa_msg(wpa_s, MSG_DEBUG, "ANQP: Invalid element");
3104 anqp_result = "INVALID_FRAME";
3105 goto out_parse_done;
3106 }
3107 info_id = WPA_GET_LE16(pos);
3108 pos += 2;
3109 slen = WPA_GET_LE16(pos);
3110 pos += 2;
3111 left -= 4;
3112 if (left < slen) {
3113 wpa_msg(wpa_s, MSG_DEBUG,
3114 "ANQP: Invalid element length for Info ID %u",
3115 info_id);
3116 anqp_result = "INVALID_FRAME";
3117 goto out_parse_done;
3118 }
3119 interworking_parse_rx_anqp_resp(wpa_s, bss, dst, info_id, pos,
3120 slen, dialog_token);
3121 pos += slen;
3122 }
3123
3124 out_parse_done:
3125 #ifdef CONFIG_HS20
3126 hs20_notify_parse_done(wpa_s);
3127 #endif /* CONFIG_HS20 */
3128 out:
3129 wpa_msg(wpa_s, MSG_INFO, ANQP_QUERY_DONE "addr=" MACSTR " result=%s",
3130 MAC2STR(dst), anqp_result);
3131 }
3132
3133
3134 static void interworking_scan_res_handler(struct wpa_supplicant *wpa_s,
3135 struct wpa_scan_results *scan_res)
3136 {
3137 wpa_msg(wpa_s, MSG_DEBUG,
3138 "Interworking: Scan results available - start ANQP fetch");
3139 interworking_start_fetch_anqp(wpa_s);
3140 }
3141
3142
3143 int interworking_select(struct wpa_supplicant *wpa_s, int auto_select,
3144 int *freqs)
3145 {
3146 interworking_stop_fetch_anqp(wpa_s);
3147 wpa_s->network_select = 1;
3148 wpa_s->auto_network_select = 0;
3149 wpa_s->auto_select = !!auto_select;
3150 wpa_s->fetch_all_anqp = 0;
3151 wpa_s->fetch_osu_info = 0;
3152 wpa_msg(wpa_s, MSG_DEBUG,
3153 "Interworking: Start scan for network selection");
3154 wpa_s->scan_res_handler = interworking_scan_res_handler;
3155 wpa_s->normal_scans = 0;
3156 wpa_s->scan_req = MANUAL_SCAN_REQ;
3157 os_free(wpa_s->manual_scan_freqs);
3158 wpa_s->manual_scan_freqs = freqs;
3159 wpa_s->after_wps = 0;
3160 wpa_s->known_wps_freq = 0;
3161 wpa_supplicant_req_scan(wpa_s, 0, 0);
3162
3163 return 0;
3164 }
3165
3166
3167 static void gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
3168 enum gas_query_result result,
3169 const struct wpabuf *adv_proto,
3170 const struct wpabuf *resp, u16 status_code)
3171 {
3172 struct wpa_supplicant *wpa_s = ctx;
3173 struct wpabuf *n;
3174
3175 wpa_msg(wpa_s, MSG_INFO, GAS_RESPONSE_INFO "addr=" MACSTR
3176 " dialog_token=%d status_code=%d resp_len=%d",
3177 MAC2STR(addr), dialog_token, status_code,
3178 resp ? (int) wpabuf_len(resp) : -1);
3179 if (!resp)
3180 return;
3181
3182 n = wpabuf_dup(resp);
3183 if (n == NULL)
3184 return;
3185 wpabuf_free(wpa_s->prev_gas_resp);
3186 wpa_s->prev_gas_resp = wpa_s->last_gas_resp;
3187 os_memcpy(wpa_s->prev_gas_addr, wpa_s->last_gas_addr, ETH_ALEN);
3188 wpa_s->prev_gas_dialog_token = wpa_s->last_gas_dialog_token;
3189 wpa_s->last_gas_resp = n;
3190 os_memcpy(wpa_s->last_gas_addr, addr, ETH_ALEN);
3191 wpa_s->last_gas_dialog_token = dialog_token;
3192 }
3193
3194
3195 int gas_send_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3196 const struct wpabuf *adv_proto,
3197 const struct wpabuf *query)
3198 {
3199 struct wpabuf *buf;
3200 int ret = 0;
3201 int freq;
3202 struct wpa_bss *bss;
3203 int res;
3204 size_t len;
3205 u8 query_resp_len_limit = 0;
3206
3207 freq = wpa_s->assoc_freq;
3208 bss = wpa_bss_get_bssid(wpa_s, dst);
3209 if (bss)
3210 freq = bss->freq;
3211 if (freq <= 0)
3212 return -1;
3213
3214 wpa_msg(wpa_s, MSG_DEBUG, "GAS request to " MACSTR " (freq %d MHz)",
3215 MAC2STR(dst), freq);
3216 wpa_hexdump_buf(MSG_DEBUG, "Advertisement Protocol ID", adv_proto);
3217 wpa_hexdump_buf(MSG_DEBUG, "GAS Query", query);
3218
3219 len = 3 + wpabuf_len(adv_proto) + 2;
3220 if (query)
3221 len += wpabuf_len(query);
3222 buf = gas_build_initial_req(0, len);
3223 if (buf == NULL)
3224 return -1;
3225
3226 /* Advertisement Protocol IE */
3227 wpabuf_put_u8(buf, WLAN_EID_ADV_PROTO);
3228 wpabuf_put_u8(buf, 1 + wpabuf_len(adv_proto)); /* Length */
3229 wpabuf_put_u8(buf, query_resp_len_limit & 0x7f);
3230 wpabuf_put_buf(buf, adv_proto);
3231
3232 /* GAS Query */
3233 if (query) {
3234 wpabuf_put_le16(buf, wpabuf_len(query));
3235 wpabuf_put_buf(buf, query);
3236 } else
3237 wpabuf_put_le16(buf, 0);
3238
3239 res = gas_query_req(wpa_s->gas, dst, freq, 0, buf, gas_resp_cb, wpa_s);
3240 if (res < 0) {
3241 wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
3242 wpabuf_free(buf);
3243 ret = -1;
3244 } else
3245 wpa_msg(wpa_s, MSG_DEBUG,
3246 "GAS: Query started with dialog token %u", res);
3247
3248 return ret;
3249 }
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